It's not so much that they have lost their creativity, it's the fact that the economy has put that industry on lockdown. Big name producers like Disney, Pixar, Dreamworks, etc... can't afford to take the risks they used to way back when. Add in the fact that every year, more and more movies are being pirated and leaked before they are even released, and that causes even more turmoil for the movie makers.
Unfortunately, now a days, movie makers continue to lower their moral, intellectual, and overall script writing standards to these "generation-x'ers" whose only focus in life is ", money, weed" and facebook statuses. (reference almost any "comedy" in the past 5-10 years and you'll see my point.) These aren't movies, these are instant sellers to retards who watch jersey shore and listen to lil wayne all day when they aren't blaming the 1% for their problems.
It's unfortunate that the movie industry has gone down this path. Gone are the days of quality screenwriting, good moral standards in which to base characters off, good acting, interesting storyline, and a coherent plot. Now it's all over producing, stupid MTV music to cheap action sequences, the quintessential love scene, the party scene, the over the top product placement, and the mushy shit to make the girls in the audience cry. Oh yeah, don't forget the titties (not that that's a bad thing).
Orson Welles is turning over in his grave right now.
/rant off