Every success DOES need a guy like Greg. But I really worry about the part where Greg was working on the effort full-time, doing it all while the other guys still worked. When it ends in success, it is a great story. When it ends without success, Greg is the guy who put all his time into it, then ends up with nothing. Greg becomes the warning story. Greg is the guy you need. Not necessarily the guy you want to be.
Greg is the guy you need. Not necessarily the guy you want to be. I don't think that's true. At least at the beginning, a "Greg" will be the person who has all the direct contact with mentors, investors, team, suppliers, and customers. A "Greg" will be the "business face" of things (not necessarily who the public see, but who everyone else sees). That's a very good position to be in when things fail or when the compa…
(I am Greg, and am reasonably happy to be me.)
I think this reply is true. But even that aside, the startup philosophy that guides me is variance maximization. So yes, when starting something new and pouring your heart into it, you have a chance of having nothing concrete to show for yourself in a few years. But if you succeed, the magnitude will be much greater, and you'll have been a core force in making that happen.
I worked on a number of startup ideas in college, which never went anywhere. The first company I worked on that had any sort of success was Stripe (which I joined when we were 4 people). I've taken an identical approach (hard work and trying to cover the entire problem surface area) to each organization I've been a part of, and am pretty happy with recommending it as a general strategy.