> I think the idea is that Bezos could have either sold some of Amazon stock over the years and paid his warehouse workers a better wage or he could have put some of his shares into an options pool for his warehouse workers.

The board of directors can allocate stock to warehouse workers and/or pay them more. For that matter, you could send your money to these warehouse workers and yet you don't. This idea that Bezos should personally give up his fortune to increase warehouse worker compensation is a bit absurd. Amazon isn't a charity and its employees are not a registered 503c, either.