I think a lot of them simply aren't at the level where they can do that, or they're reinvest their money in their next project so they can afford to do the next

I think a lot of them simply aren't at the level where they can do that, or they're reinvest their money in their next project so they can afford to do the next project without external investment. I don't think there's some secret evil "we take take take but don't give any back" mindset.