FWIW, this model (via crowdfunding platforms) has been successful in funding quite a few creative works, including very expensive ones. https://en.wikipedia.org/wiki/List_of_highest-funded_crowdfu... So the general principle is clearly workable.

Funding live action movies in this way is still not very popular, though. Arguably, the cost structure in this industry might just be too challenging to succeed in the first place. The fact that they do get funded by other means looks like a bit of a puzzle! It might even be more of a loss-leading, perhaps marketing-focused activity than anything aimed at directly making a profit.