I don't think those are really relevant to the discussion, because we are talking about lack of incentive. If I was working at space-x and getting the subsequent pay bump, I might consider it worth it. The current problem is outside of the few big guys in SV, the rest of the country is underpaying and overworking IT staff.

You can underpay and underwork, and have low turnover and medium-high return on talent, or you can overpay and overwork, with a high turnover but a high return on talent, but to underpay and overwork is a recipe for hemmoraging talent.