The illustrative Calvin and Hobbes comic at https://tvtropes.org/pmwiki/pmwiki.php/Main/IMeantToDoThat demonstrates the principle rather well.
Then he realized it was not in fact a good idea and backed out of it.
I think that's a more likely scenario: much like the hypothetical football fan, in a fit of zeal he said, "I could run this better!" If the goal were simply to flex his bank account, there are so many better ways he could have done that that I think we could safely assume he would have picked one of those instead. He may not be as smart as he thinks he is, but he isn't stupid.
So my point is not that he doesn't want it to succeed, it would obviously be a great personal embarrassment. It's that the risk of destroying a community of millions of people was clearly lower on his mind than the power trip of how cool it would be to own Twitter. He can afford to not care, and that's a deeply depressing situation.