This guy had a golden opportunity at the time. It is sad to see him came to this. I think Netscape is the third largest mismanagement of all time in computer industry (first is IBM, second is Borland).
He should have taken his money and just lived a nice, happy life with his family. These people just keep striving after the wind thinking they are something special. You are not. This will fail like "Loud Cloud".
And how stupid to think that being in Silicon Valley is somehow magical. Twitter is a black eye on the valley, lol. I think it's more like these companies simply moved there to be closer to the other tech companies they often do business with.