As someone who was a lecturer for a top CS dept, I can tell you that professors do not get compensated the same as CEOs. You can use google to check salaries for public university professors in many places (since this information is public). When a CS PhD accepts a job at a University, they take a pay cut from what the private sector pays. A full professor makes under 200K, and that is at the top of the stack. The average take for assistant and associate profs (at top CS schools in North America) is more like 130-140K. Not what CEOs make!