Here’s a sad tale that I’ve heard repeatedly recently from senior partners at major law firms.
When these partners were associates, they were superstars. They did great work, were in high demand, and sailed through the ranks.
These folks were invited into the partnership along with (or even before) their peers.
As junior partners, these folks remained superstars. Senior partners were anxious to delegate responsibility to these people, and the then-junior partners were flattered to be asked. The junior partners were doing interesting work, being paid handsomely (if not royally) for their efforts, and were contentedly busy.
But a funny thing happened on the way to retirement. My correspondents became senior partners, and this crippled them (professionally). They had aged out of utility to their firms. . . .