What's your point? You are still taking part of the founder's control away, and giving it to some third party.

Bezo's has paid a huge amount of taxes on shares of stock he's actually sold. He shouldn't have to pay taxes on money he hasn't received or is even able to spend yet. What's best for Society is that both he and his capital remains in Amazon as long as possible as investment, not being turned into consumption (which would slow Amazon's growth rate down, slow it's ability to increase productivity and raise our standard of living).