In recent years, management has not hidden their bias that long-timers are lazy and complacent and those who will replace them will run laps around them.
So they push people out, hire the new stars, who, despite being given sufficiently more resources, support and latitude, are generally weaker and, in any case, tend to cycle out within a year or two.
It’s magical. They should write management books!
@1amp+1ifZaFGr laid it out perfectly!