It seems like the very rich feel comfortable having a large percentage of their wealth in a few investments. At the opposite end of the wealth spectrum, I like extreme diversification- caring to preserve some spending power in the face of an unknown future rather than maximizing investment gains. I believe that all people need to be happy is a comfortable place to live, good food and fellowship with friends and family. Because of this belief, a conservative highly diresified approach makes sense to me.
The article clarified that family offices tend to invest in a quite economically healthy way: diverse, and more attracted to startups. Which is why the consolidation of money this time around does not pose the same threat as 1998.
