I'm sure most entrepreneur types run off the "thrill of the chase", and a big exit would momentarily dilute the initial mission. But you are waayyy overstating

I'm sure most entrepreneur types run off the "thrill of the chase", and a big exit would momentarily dilute the initial mission. But you are waayyy overstating that effect. You've suddenly got a massive amount of capital to execute on the things you've been dreaming up along the way but have never been able to do before. Zuck sure had a company of thousands of employees to look after. And even if your mission was always just to exit... get a new vision. Do I really need to invoke Elon and his first acquisitions here?