He's perfectly capable of giving stock to these employees as well.
Stock is absolutely more difficult to liquidate for a CEO.
Or is it more that most public-company CEOs are probably not playing above replacement level?
IMO we as a society should pass rules and laws to prevent people from acting this way ie limits on compensation.
I guess it's true that you can't sell "whenever you wish", but if you set up a rule 10b5-1 plan your shares are effectively as good as cash.