[vbuterin]

I would argue in 2021 the only thing that qualifies as "an entire society" is the whole world.

So unless you're measuring the world as a whole, you're measuring communities that have porous relationships with the outside world to some degree or other. But of course, cryptocurrencies are still much more porous than countries are.

[Animats]

The Gini coefficient is a property of a group of people, not of an asset class. You can compute a meaningful Gini coefficient for any group of people where income data is available - a county, a country, a ZIP code.