I still can't believe the prize money is still 1 million...their ratings are 3X-4X from the first season. What sucks about the million dollars is that it's payable over 30 years. Cash value of this prize has to be under 300K. NBC will pay billions for the Olympics, but the prize money is chicken feed for 30-episodes worth...
People would do the show without any prize money. Prize money is to impress the audience, not generate talent. The talent wants the exposure to hopefully make real money. They also want a headline act in Vegas for a while.
The judges probably make more than the winners.