Agreed with (1). I don't know if (2) is necessarily true. Experience, skills, talent, and ability to focus well could easily make this sustainable. In my expe

Agreed with (1). I don't know if (2) is necessarily true. Experience, skills, talent, and ability to focus well could easily make this sustainable. In my experience, (3) happens when they were hired at 1x salary, proved themselves to be 3x as productive, but continue to get just 3% cost-of-living raises. If you compensate them well (and the work-environment remains hospitable), they have very few compensation-related reasons to move. Nevertheless, I agree that they can still leave due to personal reasons.