This is False. Microsoft bought Softimage expressly for the purpose of porting XSI from IRIX to Windows after attempting to get Alias software on Windows and Alias told them to pound sand. Windows is the default platform of choice for all 3D software now. Apple acquired Macromedia's incomplete Windows based video editor and completed/ported it to Mac OS 9 as Final Cut Pro because Adobe wouldn't port all the features of the Windows version of Premiere to Mac OS 9. MacOS is the now the default platform of choice for all video editing software.
My statement was:
As I pointed out, there are no examples of successful ports paid for by a platform company.
Those were not ports paid for by a platform company, they were ports by the owner of the software. Peter Pathe (Blue) was the Microsoft exec who was responsible for the purchase of Softimage. His explanation as to why they purchased them, rather than paying them to port was that no ports paid for by a platform company had ever worked out. If Microsoft wanted that software on Windows they needed to own the company to ensure it was a compelling product.
Your examples demonstrate my point.
In contrast, AT&T, DEC, HP, SGI and others paid Microsoft, WordPerfect, Lotus and others for ports to their Unix workstations and computers and those were never successful.
Most creative people that have been around a while are pretty familiar with these events. The fact is that it's down to leadership and prioritization that has determined that MacOS/Macs will not be consistently formidable in 3D and that they won't be a reliable hardware/OS partner to potential most professional 3D software publishers.
In your fantasy world, in three years Sony releases an Intel based systems that runs macOS and uses nVidia GPUs. This system is incompatible with every machine Apple has made for 3 years (assuming they release a Mac Pro this year and stop selling the Intel one), and all but a tiny number they sold for the the preceding 5 years. Even assuming that Apple’s Silicon GPU is still slower than the fastest nVidia card (maybe true, maybe not). What company would want to port to that platform? It would have no installed base, would be incompatible with all the other macOS systems out there, as well as with every other platform. Sony would be starting with no customers given that they would have been out of the workstation business for 28 years and the consumer Windows PC world for 12 years. Anyone with any knowledge of history would be wary of such a product that has no natural champion within Apple (and many who would have a reason to want it to fail).
The only way Apple will gain support is to build compelling hardware of their own, that is compatible with their other machines as a family.
I was unclear, but it was a simple choice...regardless of lunch destination/quality/service at the end of the meal do you want a $1 on the table or $2? The choice is that simple initially for software publishers. All things being equal $2 will NEVER be less than $1. It's jut to say that the problem has never been with the developers or their interest in developing for more than one platform.
Sorry, your example is just false. Supporting two platforms that do not result in additional sales at a sufficient level does not generate more money, just more costs. If one’s competitors support a popular platform and one is losing sales to them, it makes sense to port. If they do not, there is no reason to bother.
Fortunately, there are enough companies that support macOS that if Apple had compelling hardware (Apple Silicon systems, not your fantasy niche system), others might be compelled to port.
Nice segue into my next point. For a company that built the computer market for creatives to have any companies building professional creative tools flat out not build tools for that platform or not build the most performant complete tools for that platform means that that platform holder f**ked up.
The creative professionals that Apple initially targeted were not 3D graphics people but 2D graphic artists. The 3D market was owned by SGI and Sun Microsystems. Some of those companies then ported to the dominant OS company, Microsoft Windows, during the period when Apple was at its weakest.
Apple Silicon is the first chance that Apple has had to build a compelling family of products that is differentiated. Whether they will succeed remains to be seen.
I don't have anything against Apple Silicon, but to a software developer they know if 2 years from now if Apple hits a wall with GPU development because they've never done it before and virtually every GPU engineer worth their weight in salt will consider 2 or 3 other employers before Apple eventually forces Apple to go in another different direction with their graphics development the Pro 3D Creative publishers will have possibly wasted millions of dollars of development of software or features.
The whole point of Metal is to make it so that people are not writing to the actual GPU, and that they can move to whatever hardware Apple ships without worrying about it.
Your argument is just as flawed on the GPU front as it is on the CPU front. Apple has been steadily improving their CPUs and GPUs for years, since their first A-series chips. This is not a new thing for them.
That's not a scenario that is going to happen on the Windows side of things. Sony offering essentially the MacOS on equal hardware footing with Windows GPU choices would create a small tidal wave of change for a lot of very influential creative people.
You are fixated on a straw man that does not exist and for which there is no compelling reason. You seem not to grasp that even if Sony and Apple both agreed with you that this was the greatest idea ever (despite all the obvious reasons it is not), it would be a minimum of two to three years before Sony could offer a product in the market. They would have to design a system and a case, build a sales and support organization, port software to hardware that has never existed before,
etc.
This is not a trivial task. By that point Apple will be on its M4 processor and would likely be on a second generation of Mac Pro. Sony would have to be committing tens (or more likely hundreds) of millions of dollars on the bet that Apple will fail.
How is that a rational bet? If Apple Silicon fails, the Mac is not likely to be a compelling product and its market share will decline, not great reason to port to it. If it succeeds, all that money is wasted. No company is going to port with the hope that people buy these machines, so no porting work would even start before they sold a significant number of systems. However, without software no one will buy any of these. Your model just makes no sense at all.
From a business perspective the blueprint is 98% the same as they have to have staff that sell to retail distributors all over the globe. Also, beyond initial set-up and major hardware upgrades most support is in-house, or with individual software publishers for specific software. Creative workstations are not multi-million dollar hospital lab machines that only lab service techs are familiar with.
High end workstations are not purchased through retail distributors, they are purchased through enterprise sales channels. Sony has not been in the market even for standard consumer grade Windows PCs for over 9 years already and by the time they could field these systems they would have been out of it for 12 years at a minimum.
Since these systems would be unique, Sony would have to build the support organization to handle them. They would have to do software support, but they would not be able to do it completely on their own, as they would not have full control of the software. Not a great recipe for success.
In your best case scenario, how many machines do you think they are going to sell? Do you think they would be 20% of the Mac market? Ten percent? How is this going to be a market that would interest any software company, given that any ports to this would have almost no overlap with the rest of the Mac market?