Those statistics about CEO pay growth are often deceptive. If you sample the top N firms over time, where N is fixed, the mean market cap of those N firms will be growing, given that the economy has grown over the time window. That the average compensation of the CEO of these sampled firms is also growing is unsurprising. The omitted variable that causes this statistical illusion is GDP growth itself.
Now, even with a non-flawed methodology, I don't doubt that we'd still find that CEO pay has gone up a lot more than other job types. But that should be true for knowledge work in general, especially high-demand + low-supply roles. There has been large structural changes in the economic system that causes this. Mainly, China has come online, meaning the non-knowledge workers in wealthy countries must compete with a billion extra people, which depresses their compensation in the labor market, which increases the ratio of a CEO's pay divided by the pay of non-CEOs.
A non-market based explanation is highly suspect and should not be the default explanation. You are basically claiming that shareholders are willingly giving away their own money for no good reason. Why would shareholders do this? They are not running a charity. The simplest and least nefarious explanation is the most likely: Shareholders believe the CEOs are worth that much in the context of current (2023, not the 1970s) supply and demand dynamics in the labor market for highly niche highly impactful CEO positions. If I own an asset worth $2 trillion, I do not care about paying $100 million for someone to not ruin it.
> If you replaced most CEOs with any reasonably thoughtful and educated person, you wouldn't see much change overall in the average performance of businesses.
At least recognize this is a speculative claim made without evidence. More of a hunch. A hunch that I disagree with.