Would have made the most sense and prob have been really popular. (I would have gone for this)
Knowing that the consumer asks for more vram, why do they choose to cripple them.
It's just a way to get people to actually double their money for the 5090 or fall into the trap of settling for A.I.
This is prob why they now start locking part of the features behind pay walls. (I.e. every series adds software only available to the next card, to make you feel like you are missing out)
I'm sure the 3090 and 4090 could handle the new DLSS and A.I. stuff, but they choose to design it in a way to gouge the customer.
All companies are doing it, just hurts that you now can spend £2k on a card that then a few years later cant play the new games at a decent level.