You don’t necessarily need Bitcoin for the effect I was talking about. They’ve compared Europe to the US where Europe has a less free market and higher concentrations of wealth across time than the relatively more free US. It’s confusing because if you’re measuring inequality with say the Gini coefficient it seems higher in the US at any given moment in time but across time the people in various brackets change more in the US. I do agree that money printing probably causes more of the money to be concentrated across time so Bitcoin is needed.