I don't think people really understand the gravity of those fortunes.

Jeff Bezos could now (in theory, at market prices) buy Tacoma, Washington.

As in buy every piece of real estate, private and public, all utilities and infrastructure.

A town of 200,000 people. One man could buy it all. The assessed property value for 2017 was just over $105B, including government-owned, plus wiggle room for other properties.

That "should not" be possible. Buying (or being able to buy, rather) a "mid sized urban city", as an individual.