Nobody disputes that more productive people should get more reward. But with inequality increasing I have my doubts that the top x % are increasingly more produ

Nobody disputes that more productive people should get more reward. But with inequality increasing I have my doubts that the top x % are increasingly more productive than the rest. Or are today's CEOs who make for example 200 times the average workers salary 10 times better than the CEOs in the 50s who made 20 times as much as their workers?