I'd be interested to know if they're founders of those companies or they just participated in them during the early days. My guess is a typical 45 year old foun

I'd be interested to know if they're founders of those companies or they just participated in them during the early days. My guess is a typical 45 year old founder had one or two unsuccessful companies they founded, not a few. And of the companies they participated in but didn't found, maybe some were successful. But these are just guesses, and it would be nice to see some data.