I believe the illegality is centered around conspiring to lower wages, the guys suing are claiming that this was achieved through the non-solicitation agreement

I believe the illegality is centered around conspiring to lower wages, the guys suing are claiming that this was achieved through the non-solicitation agreement. I can see how this could be the case, especially when it looks like the biggest tech employers in silicon valley were all in on it. A few companies or companies in different areas agreeing not to poach won't affect the average wage, but when the majority of positions aren't being contested the incentive to offer larger wages drops.