There's the entertainment industry for you: One person makes millions, and someone else tries to get a piece of the action screaming "they stole my idea."
I'd like to know why these suits don't come about until AFTER something becomes a major success. If someone stole your idea, get it out there IMMEDIATELY.
It takes awhile to find out music is stolen, a song may be a huge success on one coast and then 6 months later it hits big and you realize it's a song you wrote. Unfortunately, alot of these artists never bothered to officially copyright and takes a few more weeks as well to get that sorted out(copyrights exist the moment you create something if you can prove it was created before the other artist they have less of a leg to stand on)
If you have a legitimate claim, the more money they make off it, the more you stand to get.
A) More exposure for your art
B) All/Most of the money earned from the theft goes to you.