I think having a founder stay on and lead, well after they are financially independent is very respectable. It says they are interested in more than just chilling on the beach.
Which is not necessarily a good thing, being more interested in reshaping the world even after it becomes clear their vision for the new world isn't making it better just leaves someone with lots of power and bad ideas, not a good combo.
I'd much rather have them chilling on the beach after being done with the limits of their competence.
Orphans and imports don't escape. Even those that are not born here (eg Musk), are eventually taught by society to do the same.
Zuckerberg and friends don't just want to chill on the beach: They want to 0wn it. A common property, then redefine it as "obviously not common", at the expense of others, so that no one else can chill on the beach, unless you provide compensation, for obviously infringing upon their rightful rights duh.