The salaries aren't low because of equality though. You're just shifting the high earners from the people doing the work to the managers of the people doing the work.
Mind you, there are exceptions. The CEO of a certain hotel bookings company makes €17M/year. Technically an american company though.
From world market leader to out of business in 7 years.
The few that appear on the list pay FAANG-level salaries for the most part.
What do you mean by average CEO? That's about the same as a CEO of a mid-sized American company. Shell's CEO makes a lot more than that, even considering the terrible year for oil.