Jason Schreier has been pushing for game developers to unionize for a while now.

In the case of programmers, it really doesn't make much sense. There's a lot of BS that can come with unions. They have transferable skills. It's just easier to change jobs.

For more specialized workers a union probably does make sense, eg: 3d artists, game testers.

But I think union organizers are really only interested in the programmers, because they'll probably generate the most dues.