Are you saying that the solution here is to sell computers so locked down that no user can install anything other than verified software?

That’s what I want as a gamer. I want a PC that works as a console. Whether I want that for other use cases or this machine doesn’t matter. I’m happy to sandbox _everything else_, boot into a specific OS to game etc.

The thing about gaming is that it’s not acceptable to leave 5% performance on the table whereas for other uses it usually is.

That’s not really incompatible with this? That’s just how secure boot works. You can re-enlist keys for a different root of trust, or disable it and accept the trade-off there.

The idea is that it would require a verified hypervisor, and verified operating system for the game, but you could still at the same time be running an unverified operating system with unverified software. The trusted and untrusted software has to be properly sandboxed from one another. The computer does not need to be locked down so you can't run other hypervisors, it just would require that the anticheat can't prove that it's running on a trusted one when it isn't.

The security of PCs is still poor. Even if you had every available security feature right now it's not enough for the game to be safe. We still need to wait for PCs to catch up with the state of the art, then we have to wait 5+ years for devices to make it into the wild to have a big enough market share to make targeting them to be commercially viable.

No. I'm saying we should all drink the blood of babies to stay eternally youthful. You didn't read between the lines deeply enough.