Honestly, I respect the commitment. It's almost certainly a bad decision, but a founder that can turn down a 9 figure exit at the tail end of a tech bubble he's right in the middle of, has a good chance at having the right mindset to build a great company and survive the collapse. There's a good chance he regrets this for the rest of his life, but you can't argue that he wasn't a true believer or is a sellout.