As you know there is luck (of various types) involved for anyone who has ever gotten anywhere (even if family connections as a separate benefit there is also luck).
You have to give Mark credit for doing a good job of snowing and playing Yahoo that does take skill.
Look if Steve Jobs had grown up in, say, Iowa USA, had strong family ties that prevented him from even thinking about moving to Silicon Valley, where would he be today?
If Bill Gates's mother wasn't on the board of the Red Cross he'd never have the IBM connection that gave him the contract. (Forget as well that he was the right age at the right time as well).
Notoriety and wealth is always outsized relative to actual capabilities.
Was watching Bloomberg on 60 minutes. Sure Mike is a really smart guy. Worth 40 billion or whatever. But compared to a smart guy who is worth 3 million or in debt he isn't that much smarter (Edit: I mean as a percentage ..). It's always been like this.
I am not ever jealous that people have luck and great success. But I am typically annoyed at how other people (press, pundits, media, bloggers) give them accolades that essentially reduce to 'wow this guy is really smart capable' w/o acknowledging any luck at all.