A movie costs millions of dollars to make. Good luck finding enough public-minded cinephiles to pay for them.

Dude. Dominant assurance contracts look ingenious. I had never heard of them before.

http://lists.canonical.org/pipermail/kragen-tol/2005-June/00...

And once you raised the money with the dominant assurance contract, you can even outsource the creation of the public good in question with social policy bonds [1].

[1] http://socialgoals.com/blog/spbs600words.htm