It’s astounding how long companies can ignore this about their people. Acknowledging that kind of power in an employee probably messes up the power dynamic in uncomfortable ways.
I recently learned that one of the heads of SpaceX is heading his own company now. It’ll be interesting to see if his bus number was high enough that the wheels stay on, if the symptoms will be obvious if it wasn’t, or if they will be explained away by other phenomenon. I have had enough successful bosses that credited the wrong actions that it stands to reason that most failures are also blamed on the wrong chain of events. I know my own narratives in 5 Why’s situations are often in stark contrast to other theories.
Define 'fast' and 'these days'. Lots of companies are affected by bus problems, but I'm not so sure they're successful at dealing with it. I'm also not sure this is a new phenomenon, and it's certainly not universal. If anything I can think of a couple of projects that suffer from too little turnover, and the resultant echo chamber.
As for 'dealing', look at all the status Google services have lost in the last ten years due to systemic problems with valuing novelty over stability. There are perverse incentives not to maintain things you have delivered, even if you are still at the company.