I hear what you’re saying, but there’s simply not enough sales volume in the consumer space for a tower product. 80% of users buy laptops and at least 10 and maybe up to 15 of the remaining 20% buy iMacs. That leaves 5-10% of users—only one to two million units—to fought over by Mac mini, iMac Pro and Mac Pro.The fundamental problem is not that this Mac Pro is too expensive for what it is (from all accounts the hardware in it is absolutely firebreathing), but rather that for a brief time there (the age of the cheese grater Mac Pro), Apple made a no-nonsense high-end thoroughly expandable workstation Mac which was comparatively affordable. Which they let die on the vine, and then followed up with the utterly unexpandable trashcan Mac Pro. And now, this one, which has unbelievably good performance, but is also priced out of the hands of a lot of private users or edge-case users who could have afforded the old cheese grater Mac Pro.
The problem is, a dozen years ago, their answer to "we want a very fast expandable machine" was the computer equivalent of a $60k sports car. And a lot of people loved that and could afford to get one, even if their use case wasn't "rendering million dollar special effects in real time". This time, their answer to the same question is the computer equivalent of a Bugatti Veyron - and it's obscenely powerful and expandable, but it's also priced out of the hands of a lot of the people who could get the cheese grater back in the day.
And now there are a lot of arguments (like in this thread) where much of the problem is that various participants in the discussion are working from different definitions of "professional user". Yes, for users with the very highest high-end needs, this machine is perfect and entirely justifiable. But there are a lot of users with less lofty needs that could justify/afford the old Mac Pro, who can't justify/afford this new one. Keep in mind that it's not a binary comparison of "blockbuster special effects artist" vs "home user", there's a whole spectrum of use cases in between.
It's particularly painful when the Mac Pro is the only internally upgradable/expandable Mac in the lineup. There's ample room for a "Mac Pro Mini", in a much more modest box, with some capacity for upgrades (RAM, SSDs, video cards). But, Apple won't build that. Instead, those users are told to buy iMacs, which are not expandable, and which come with permanently attached monitors (they are very nice monitors, but you don't always need to replace your monitor when you upgrade your machine).
That’s a really small market for which to carry three models, and there’s just not room for a fourth. The only way even three works is that the Pros are relatively expensive, and the mini isn’t exactly cheap. The cut-down Pro you want, unless it were priced at least at $5k, would actually cost Apple profit and revenue due to cannibalization of the full-size Pro. It’s just not a viable product
At this point the needs of someone who can’t justify a Mac Pro are best met by the Mac mini. No, it’s not a mini tower but with an eGPU, it can meet a surprising number of requirements.
It’s got a 6-core/12 thread desktop CPU, which will probably be 8/16 with the next refresh assuming Intel releases the appropriate CPU (and there’s no reason they shouldn’t). Max RAM is 64GB and is user upgradeable. With four Thunderbolt 3 ports, eGPU, SSD and other expansion options are available, including an external PCIe enclosure for the few who actually might need slots.
No, it’s not a tower, and being limited to x4 on an external PCIe bus instead of x16 internally isn’t ideal, but it’s a small market and it’s hard to satisfy 100% of customers. And the Mac Pro isn’t out of reach for revenue generating pros.
Well that’s my take anyway. It’s not that I don’t have sympathy for those that are caught out, but from a practical point of view, I can understand why Apple isn’t going to make a Mac Pro mini.