For now, anyway.
Maybe he was just intrigued by the role/story.
Like Battlefield Earth, Travolta has enough cash that he could make his "dream project".
Didn't work out so hot.
In fact, Travolta has kind of fallen off the radar again.
If Depp continues making high budget stinkers, he won't KEEP his riches, though.
He sure can. He’s done some good work. One of my favorites is Nick of Time. Very 24esque-type thriller. I heard Travolta say that it takes more time to keep current on his pilot ratings than making movies.
Battlefield Earth would have been better as a 8-10 hour miniseries.
That is a LOT of pages to try to squeeze in to single movie, and they left out a lot of the character development.