Hmmmm, not sure I get your point here.
Why was everyone so crazy for hardware this generation? Because didn't we break records at launch?
Early adoption was through the roof. Consoles are outpacing previous gen by a decent margin.
And that's because more people buying early as in launch and on.
When new hardware get's introduced that's not really a new generation people wont be too keen on upgrading or buying when the new gen comes because they will have the option of a PS4K which will still be supported.
It's kind of like why apples second hand market is so great, people will still hold on to ipad2 or whatever because all the apps for the most part work.
So when PS5 or whatever even comes out people may not be so rabid to buy it right away. And that usually helps spur each generation.
And if iteration console becomes a thing and they support the previous model because each iteration is 2-3 years apart, why would people jump on right away on the newer hardware?
Is that the technical term for it?
No it's just kind of known looking at AC:unity, GHOSTS, BF4 among others that their engines are not optimized well. And that comes down to what I said about giving them more time per platform to make configurations work for each systems advantages and disadvantages.
Instead of having parity. Just make each version run the best they can and if both versions are not due at the same time they can prioritize their workflow better for their engine optimizations.