I agree, unionization at face value seems to be a great tool to empower workers. As for reciprocity I don't think anyone is suggesting it's perfectly balanced.

I agree, unionization at face value seems to be a great tool to empower workers. As for reciprocity I don't think anyone is suggesting it's perfectly balanced. If you're using that phrasing as a device to suggest it's extremely unbalanced then I would wonder what data you're using to come to that conclusion. It is, after all an entirely voluntary relationship being formed in a country with no shortage of jobs.