You're completely right. I'm glad to see that you're taking the side of the employee in instances like this. In this particular case, it wasn't me who became critically demoralised. It was another good employee who'd been there for years, who discovered he was being paid much less than everyone else. He resigned within a short time period of the group discussion.
You're totally right about individual bargaining power. As someone who's worked as a software-engineer contracting in fintech you'll find yourself at the spearhead of capitalism ( as envisioned by someone like Milton Friedman ), for better or worse.