IDK, there will be games that will push the 5090. I play VR sims, the quest for clarity via supersampling is endless, there is no max. I have to do 1.1x in LMU with a 4080, but I can do 1.4x in iracing and ac and AMS2 and they are all very clear on the quest 3, though not quite monitor clear... though not jagged at all, either I must say.
But that 5090 price is just... it's silly. Like I said before, even if you can stomach paying it, people will think you're ridiculous. I'd feel like I could never really criticize anyone's decisions ever again. The founder 5090 will be VERY difficult to get here in Canada, so that 3k msrp is gonna be more like 4k with taxes and AIB upcharge. And that's a lot of money. You can buy like, a car or a motorcycle or a boat or something for that much. Not great ones, but I'm just trying to say that once it gets over 3 grand canadian, it's beginning to be a real amount of money