Not really. Before the FPS storm, whatever EA and first party developers made pretty much led the industry. Really, as long as shooters help third parties see profit then I'm all for them.
And yes, they seem to be crowding the American charts and blocking the way for innovation in the shooter and other varying genres. But really, developers are just going with a safe bet. I honestly did not expect Assassin's Creed to sell even half it did, but Ubisoft found a successful franchise and I commend them. With development costs much higher this generation, developers have no choice on the HD consoles but to go for something that can't help but sell, and shooters seem to be a safe bet. If developers ever get a handle on development costs (or they're lowered next generation) than we may see more risks being taken.
Don't point FPSes out, though. They're really no more prevalent than racing games or games involving washing a puppy's coat. We only notice them so much because they're so high in the charts, as is the intention of the companies developing them.
