This is honestly affordable for a lot of upper-middle class people and might well it worth it. It's like the cost of a car. I can seriously see this writing a book for me if I can get it tuned to study only my writing style and remember all of my texts. But it could also only cost $14000 14x RTX 3090s.
Difference is in first mover advantage. If you can be the first to use it to bring value to yourself and your clients, you can easily make up the cost of that hardware.