The increasing concentration of the ownership of wealth/assets in the top 10% has an under-appreciated consequence: when only the top 10% can afford to buy assets, that unleashes an almost karmic payback for the narrowing of ownership, a.k.a. soaring wealth and income inequality: assets crash.

Most of you are aware that the bottom 90% own very little other than their labor (tradeable only in full employment) and modest amounts of home equity that are highly vulnerable to a collapse of the housing bubble.

As the chart illustrates, the top 10% own 84% of all stocks, over 90% of all business equity and over 80% of all non-home real estate. The concentration of ownership of assets such as vintage autos, collectibles, art, pleasure craft and second homes in the top 10% is likely even greater.

The more expensive the asset, the greater the concentration of ownership, as the top 5% own roughly 2/3 of all wealth, the top 1% own 40% and the top 0.1% own 20%.

In other words, the more costly the asset, the narrower the ownership. Total number of U.S. households is about 128 million, so the top 5% is around 6 million households and the top 1% is 1.2 million households.

This means the pool of potential buyers is relatively small, even if we include global wealth owners.