Very very unlikely. Devs aren't competing with the hardware, they're competing with each other, so it will always be in their best interest to push the limit and advise players to turn down the specs to what the find playable.
Simply put, your game isn't going to be as pretty as your competitors if you're aiming to let people on the 8800gtx play it at playable framerates with full detail and 16xAA, ect, at some absurd resolution, and your competitor is advising them to simply turn down the specs.
And even if it weren't, you have to know how to use the hardware - I've heard some talk, though I don't know how true it is, that oblivion's performance issues are caused by oblivion being coded poorly - something to the effect of it doesn't do z-culling.
Hardware can't solve people problems.