Well, would anything of value be lost? Like, why don’t just sell custom built PCs? Then developers can actually develop against a few common APIs, no more exclusives, etc..
PCs are only expensive if you go the “current best” route, but hardware advances are well in the diminishing returns category (maybe besides hardware-accelerated ray tracing), so you can very well play most games on mid-setting on a few years old PC which you can build from $500.