> I’m on year 15 with most colleagues in the 5-15 range, some approaching 20.
That doesn't counter their theory though, since people (presumably) won't tend to stay at jobs that aren't worth staying at. Sooner or later everyone finds their way to a job worth staying at and becomes another example of survivorship bias.
The biggest factor is presumably the company itself, some are much more successful and generous as a result while others struggle more and share the pain. But also within a company, there can be a counter-effect where making some jobs better causes more crappy jobs, for example if you're constantly pushing the less fun and career-dead-ending stuff onto the new guy while the senior people with all the political sway take the fun, cutting-edge, etc new tasks.
That doesn't counter their theory though, since people (presumably) won't tend to stay at jobs that aren't worth staying at. Sooner or later everyone finds their way to a job worth staying at and becomes another example of survivorship bias.
The biggest factor is presumably the company itself, some are much more successful and generous as a result while others struggle more and share the pain. But also within a company, there can be a counter-effect where making some jobs better causes more crappy jobs, for example if you're constantly pushing the less fun and career-dead-ending stuff onto the new guy while the senior people with all the political sway take the fun, cutting-edge, etc new tasks.