*> salaries are not negotiated and are systematically the same for all employees...

> salaries are not negotiated and are systematically the same for all employees in the same seniority ranks

What companies actually do this? In my experience, none. Not even governments actually do this, though on paper many will claim they more or less do.

My last 3 employers. They exist!

I probably reject 99% of all recruiters that reach out.