Sounds like you're waiting for somebody to tell you how much money they need. There's no answer, they need all the money. If somebody asked you how much money you needed to do something, and you had no competition and they would not or could not walk away, you wouldn't have an answer either. You'd take all the money.

This is just how not having antitrust, media ownership limitations, or consumer protections works. The actors, crew, and production companies are in the same boat as you when dealing with Disney.