That's what I'm saying - I think both AMD and Intel risk becoming obsolete dinosaurs if they keep focusing on x86, which is what they seem to be doing.
Also beware of what you wish for, that is basically the end of PCs when it comes to be, the dream of OEMs, going back to fully vertical integration as all computers used to be in the last century, with exception of PC clones, thanks to IBM failing to control the ecosystem.
It didn't, other than in some niches.