Do you think GPUs are going to keep going up in value forever like houses? The current situation (game console price rises years into their lifecycle) is unprecedented and irrelevant to my point.
And if you need SOTA then you can sell your old card sure, but the next xx90 card is now 2x the price as the last gen. So you're not any better off.
A lot depends on what happens with China. I don't think Xi will attack Taiwan, but then I didn't think Putin would attack Ukraine, either.
If Xi goes for Taiwan, then yes, GPUs will appreciate like real estate ("Buy now! They're not making any more of it, you know!") for the next 10 years.
If GPUs appreciate like real estate then we'll probably see game graphics flatten in response. AI will continue to be a money sink no doubt, but if you have a good card in 2026 you're probably fine for gaming for the next 5 years.
And if you need SOTA then you can sell your old card sure, but the next xx90 card is now 2x the price as the last gen. So you're not any better off.