Well there are no other games to buy? It's not like they can switch over to NFL 2K7 anymore if Madden sucks. They could do All-Pro Football, but that doesn't solve your NFL wants.
Also, if the Ps3 owners buy a shitty PS3 version of a game. They'll probably end up buying the PS2 version, which may end up making them even more money.
Also, if the Ps3 owners buy a shitty PS3 version of a game. They'll probably end up buying the PS2 version, which may end up making them even more money.