Just an observation: decades ago in industrial companies of some size it was the practice to move newly hired managers around systematically for (say) the first 5 years so they could see how the whole company worked.
That only makes sense when people expect employees to stick around though, in today's market you would expect the vast majority of people to not finish the 5 year program yet alone show any benefits from it.
Perhaps that is the problem (at least with some sectors: a close friend's partner's daughter has worked as a civil engineer with a couple of employers for a couple or three decades now - she can show you the roads she planned and managed the building of)?