However, thou Bitcoin transaction is transparent and can be seen by anyone on its blockchain, I doubt if it is possible to see a hierarchy of users with the highest amount of Bitcoin, as a criterion for you to have come up with this statement of yours.
by bitinfocharts
So, if you look at your chart... you will see that only 4.32% of addresses contains between 100 000 and 1 000 000 coins... but that can easily be explained. (This is highly likely that it is the cold storage of some of the largest Exchanges and/or casinos in the industry)
Now let's look at the distribution of Fiat wealth as an comparison ==> https://www.statista.com/chart/11857/the-global-pyramid-of-wealth/ (There will always be an unequal wealth distribution with capitalism in this world)