> but bizarrely then talks about unions, which are known to depress wages for top performers (just look at teachers unions, where pay is totally disconnected from competence and performance).
Public sector unions are an entirely different ball of wax because negotiation power and strike power are both limited. The management for public sector jobs doesn't determine budget; neither does the amount of revenue generated by the business. It's 100% a decision of a legislature, and that decision will often have absolutely nothing to do with the quality, performance, or demands of the actual faculty, staff, administration, or schools themselves.
For example, teachers are unioned and do have generally low pay[0]. However, I could point to police officers, which are also nearly ubiquitously unioned as well and they have high salaries[1] in spite of a training program that is generally less than a year[2].
The difference? Increasing police funding always looks good for both parties (or has historically). For teachers, half the political landscape has a plank that's all about de-funding public education in favor of 100% private education.
Furthermore, there's another factor: Teachers are generally women while police officers are generally men. That means the structural gender bias in salaries is going to be higher here than in careers where the genders are more equally divided.
In short, it's much more complicated than you're making it out to be.
[0]: https://www.indeed.com/career/police-officer/salaries
[1]: https://www.indeed.com/career/teacher/salaries
[2]: https://www.insider.com/some-police-academies-require-fewer-...