Comment by RichardHeart

You're describing the Gini coefficient. Here's an article on why you shouldn't overuse that: https://vitalik.ca/general/2021/07/29/gini.html That being said, 42% of all Bitcoin sits in 2100 addresses. Google "Bitcoin rich list" and you'll also be able to look on that site at other coins as well. People will point out that those are exchanges representing users. And I'll point out, crypt was invented to remove middlemen and exchanges are middlemen.