Like it or not, 'IP' exists. By doing these kind of projects, sadly these people relinquish their rights.
They could be 1) fighting for change in these laws, 2) investing in free culture/software. Sadly, almost all of them don't.
They are happy to operate in that grey space as long as it is tolerated, but they should know that they are on borrowed time.
Big companies striking with absurd power at fan projects should help drive the point home, and should be the occasion to advocate for open standards.