As long as every single Marvel movie makes bank, every single movie is going to be a Marvel movie.
It's hard to argue for original content when franchises like Harry Potter and Hunger Games and LOTR show up and erect little money printing factories. If you're going to risk a huge budget, may as well be on something with enduring profitability.
And you're forgetting about where the *real* movie from the money is made... MERCHANDISING!
Steam + PSN: PHJF