The richest 1% of the world owns over 50% of the world's wealth.  There's no reason to believe the distribution would be any different for cryptocurrencies, particularly since owning over 50% of a PoS cryptocurrency would mean non-stop, no-cost 51% attacks.  Allowing the control of a network to become so centralized defeats the entire purpose of blockchain tech and would likely cause it to implode.

Here's an article backing my 1% claim, it's a few years old but if you google the topic you'll find tons of corroboration.  https://www.cnbc.com/2017/11/14/richest-1-percent-now-own-half-the-worlds-wealth.html