Except the problem with that mentality is that you now have to start charging more (as car companies do for their high-end models). How much money could Id Software or Epic games make for a title that requires a $2000 PC to play? How many copies could they sell? Would the support nightmare be worth it? Think Ferrari/Porsche money compared to Honda/Toyota money. What do you "drive"?

That being said - I would like to see someone try this, and I would probably buy said game (unless it was another stupid CoD clone).