It would have to be the right project that is already making money for them to invest. Robert or Mark would probably invest, but the rest wouldn't "get" it, especially Mr. Wonderful. I think the killer app that a few people have tried but not successfully launched is a decentralized marketplace. Done correctly, it would challenge sites like eBay and Amazon. Something like that would really get their attention... eBay practically robs the consumer with it's 10% fee.
Also, Lighthouse (a decentralized kickstarter) is severely underrated. I think we'll see lighthouse take off this year, something like that would get their attention too.
That's cool about lighthouse. Never heard of it til now. First thing that comes to mind is volatility though. A $1M fund raiser today might be half or double that tomorrow. Regardless, lighthouse is important and I've bookmarked the site. thx!