A big part of the problem is: Who make these decisions?

Whoever steps up to the plate. I don't see any reason why it would require Larry's or anyone else's official support. This is how open source works.

Although, I'm still not sure how this differs from what Parrot promises to deliver. Unless I'm missing something It would seem better to work with them rather then starting your own project.

Update: Changed link from parrotcode.com (which is unrelated) to parrotcode.org (the correct site). Thanks to grantm for pointing this out.