And the alternative is to use a framework and sell your soul to it or, even worse, the company that makes it. In some cases that includes giving them a % of your revenue. If you ever ship, that is.
But surely having 80% of some revenue is better than having 100% of nothing.
ya, but the game isn't going to launch for another 7 years, so you are worrying about % of revenue that is so far in the future, it might not even happen