I'm at a tech company. It's nowhere near prevalent, nor do I think many employees actually want it. I'd love for it to happen, though, and IMO the first place it should happen is the video games industry.
Agreed. I think we're in the, "fuck around and find out," era of tech company unionization, and I'm fortunate enough to work for a company whose legal team is smart enough to know that a reasonably happy, fulfilled, and compensated workforce is significantly less likely to even start discussing unionization, and so I don't think that my company will see it anytime soon, if ever (which I also think is fine, for the record). But to your point, with the way that the vast majority of the video game industry treats their employees, I hope that every single one of those large game companies ends up joining a union, because the employees deserve better.