You know, someone at EA needs to get a nobel prize for business for this one. Talk about turning a problem into an oppurtunity.
So your hot property new game has a problem. It requires user created content to populate the universe. Saves developer time actually making the stuff.
But, under those circumstances, upon release - when the all reviews are coming out - they'll be little to no user content available, until the users get around to making it.
So, you release the creator alone early, letting your customers get a taste of the crack you want to sell them, and getting you your release day content so there are dinosaurs in your dinosaur park.
That alone takes genius - getting the people you're selling the product to to do the work for you.
But then giving them only a piece of the creator, charging $10 - a fee small enough that at least some people will pay it in spite of the principle - for the whole thing, and making an actual profit off getting people to do you work for you?
That's friggin economic savvy right there.