Well sure, current generation mid-range performs like previous generation high end. That's a tech product truism.

> they are just reselling the same computing capacity as they have been for the last ten years

I'm not 100% sure what you're trying to say here, but as far as I can tell a 4090 offers quite a bit more "computing capacity" than a Titan RTX, and that's just over five years ago.

> RTX 4060 is a RTX 2080

Probably, but I just put one in a small desktop for $280, not the $700 a 2080 cost new. So, yeah they're selling the same stuff, it just costs less.