And to counter this argument? I work for a company that's certainly under the heading of "creative professionals" - helping universities and Fortune 1000 firms develop internal marketing strategies and campaigns.
We're primarily a Mac shop, but we can't cost justify these $5,000+ per machine expenditures, especially for a non-upgradeable or user-servicable desktop!
The majority of our employees (sales staff, various project managers, etc.) currently get by ok with a Macbook Air 13" as long as it's the "high spec" model with the 512GB SSD and 8GB of RAM in it.
Moving forward, we're issuing people the new Macbook Pro retina 13" notebooks as the standard. And frankly, that's the most money we've ever spent on computers for the typical employee here (by the time you add in the cost of the necessary dongle adapters and a suitable 27" display with USB-C hub built into it).
We used to have one Mac Pro workstation in each office for the people doing design work or rendering, who needed more power than the laptops. But the use of those has dwindled. Our office doing most of the 3D rendering work went to Windows workstations a while back, and never looked back. Much more bang for the buck with better video card options.
The office I work in still has a 2010 era Mac Pro tower that's practically never used anymore, other than someone powering it on rarely to try to find some old Illustrator or Photoshop file they remember was saved on its drive in the past. I asked if they thought there was any need for a new iMac Pro, and they quickly rejected it as pointless.
None of this is an attempt to discredit what you've said about your own situation. But I'm trying to point out that some multi-million dollar, award winning creative firms employing hundreds of people are saying "No thanks!" to this new Apple "pro" gear. It's not just the "gamers". We've invested a lot in both cloud-based and back-end server infrastructure in recent years, and the flexibility that gives people to access and share content from anywhere is more valuable than making sure the "fastest computer Apple is willing to sell us" sits on some of our desks. We have a good I.T. department on staff (myself included as part of that team) and we're all comfortable taking Macs apart and swapping or upgrading components. When the system has even the SSD soldered in, that's a big negative in our book. (Why pay for our skills and abilities to do that sort of work, when we can't do it with the chosen hardware anyway?)
