The only reason FPS's are more likely to be made by a developer than a Platformer is because a FPS (And I say this only generally as KZ2 is definetly one exception and Halo is another) is cheaper to make and has less of a financial risk.
Shooters generally sell well and so there is much less risk than a game like LBP which is a much more family game aimed at a Mature audience - there is a much hihger risk, devs know there'll normally get a profit on FPS games rather than something more ambitious.
Games like LBP, Ratchet and Clank, MGS, Assassins Creed etc. prove that there is still lots on unused potential out there and games like GTA show that well known old formulas still generate profit - If everygame was a shooter the world would be a very boring place. I think there is still a lot of imagination out there but I think the FPS to everything else ratio is just about right at the moment.
Richard
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