This has been discussed in several places already (and maybe even here), but Hollywood suffers from a serious lack of creativity today.
How many actually creative (and good) movies have been made in the past decade?
Off the top of my head, I can say Inception... which, among other things, spawned the copycats of the Inception sound, ironically. Even PIXAR has done about half sequels, and I consider them the most creative studio currently in Hollywood. (The most creative of their movies in this time period was WALL-E, so I guess I've got 2... and checking Wiki, in production they have 3 sequels and one original...)
We've had some good movies of existing ideas (Nolan's Batmans), but I'm hard pressed to note many others.