One recent evening, just before sunset, a friend and I decided to swing by Sagamore, the beautiful and historic horse farm in Baltimore County up for sale at $16.5 million. It would be great, I thought, if some billionaire bought the place and kept it equestrian.
But before I go on about Sagamore, let me tell you about the last time I suggested — and only somewhat whimsically — what a superwealthy person might do with his or her money.
It was not for the purchase of private property, such as a horse farm. It was for a project of public benefit…