For what it's worth, I think the license is much more critical than being royalty free in terms of value creation. While royalty free is "cool" for generic Youtubers. Professionals and corporations with real budgets have money for royalties and it can be rounding error for the money they spend on lawyers to keep them away from copyright problems. To put it another way, clear and central copyright licensing has the potential to allow the project to move well upmarket. Without it, even free wouldn't look like a bargain to someone serious enough to have a lawyer.