In today's world the CEO of a big company has to work harder and needs to make even more profit each quarter to keep his seat, otherwise the shareholders and the board of members will fire him and hire someone else. If you are making 10 billion dollars in profit this quarter, you need to make 10 billion plus 1 dollar next quarter.
The companies try to spend less and less every day and need to profit more and more. Which means those CEO's give people less and less money and longer and longer hours and keep getting best tech to find a way to fire as many people as possible to keep their shareholders happy.