It's not so much pressuring founders to behave better, as choosing better founders. The "play hard", "meritocratic", "hashtag winning" douchebag seems to be a good choice because they work hard to appear to be a good choice and seem to have the drive to do big things. But if it all falls apart before they can achieve greatness because of the inherent douchefail, then that's a lesson investors need to learn. Don't bet on douchebags.