And the market is free to consider this an unwise investment and tank the stock. ¯\_(ツ)_/¯ Also, since FB is a publicly traded company, it's not actually "his

And the market is free to consider this an unwise investment and tank the stock. ¯\_(ツ)_/¯ Also, since FB is a publicly traded company, it's not actually "his money". It's the shareholders' money (of which he is but one), and thus he has a fiduciary duty to act in the best interest of those shareholders. https://www.law.cornell.edu/wex/fiduciary_duty https://www.law.cornell.edu/wex/fiduciary_duty