There are a lot of people who are simply unwilling to give up the power.
Brandon is figurehead of the problem as are Schumer, McConnell, Pelosi and others but the root problem is ego: “There will never be a person as well suited to do X as I am.”
One, it’s not true, no matter how superb the individual; and those I named are definitely not superb.
(OK, that’s one.5: the incompetent, evil, and corrupt definitely don’t want to give up because they’ll be exposed and some of them are far worse than that.)
Two, even for the well-intentioned, if there’s nobody behind you ready for the spot, you’ve done a crappy job as mentor, which means you failed in your job anyway. Good bye.
Unfortunately the youth culture inculcated in the 1960s means that the normal respect and deference due the elderly is shot, and now the people who made that happen are the elderly reaping the contempt they heaped on others.
Would you say the same thing about Trump?