Not really sure about that - I think multiplatform titles are really the best choice for gamers. That means that gamers don't have to own more than one or two consoles to enjoy a variety of games.
I'm sure console makers hate it and developers also hate porting to other platforms or scaling down a game to a lower tech platform, but if you're a gamer who is responsible for your own financial status, multiplatform games are really the best choice.