> Musk asks fellow billionaire Larry Ellison if he’s interested in helping take Twitter private, and Ellison offers up $1 billion like it’s the spare change he’d find in his cushions to make a run for some snacks at 7-11. Musk replies that Ellison should invest $2 billion.<p>Sounds about right, in relative terms it is couch cushion money, for the world's wealthiest.