Besides working conditions and pay, one symbolic issue that's come up from game devs being exposed to these unionized parts of the industry (especially voice talent) is that the unionized people seem to have fairer rules around credits. For example, if you do a voiceover for a game that ends up in the shipped game, you're going to end up in the credits, full stop. For programmers, by contrast, companies have done shady things like leaving people out of credits as some kind of "punishment". For example, if you leave before the game ships, you sometimes get retroactively taken out of the credits even if you objectively contributed large amounts to the final shipped product, because there are no binding rules around credits, except for the actors.