M4 crushing benchmarks and AWS running Graviton 2 would disagree on the idea of "whole premise".
Everyone is buying the tool that does the job, or building that tool if they want to make that large investment...
I'm updating my wiring and air conditioning for a 7x5090 workstation because having that power for experiments under the desk is worth the cost (and fire hazard).
If I had to build 10,000 of those I'd be banned by NVidia from ever buying their hardware again.