No that's not really it. That might be part of it. I've been to their studio, and worked with the Editor.

The real reason is that they are paying the people who work on it a salary (including the producers) and are giving stuff out to the people who contributed. In a sense, by contributing you are "buying" the final product if you are getting a copy.

Their issue is there is profit being made, plus they planned to use the studio they were about to afford to work on and launch other projects in the future.