Something about New York sports team owners makes you despair the future of nepotism.

Let’s put to the side the Yankees, the Amazon of American sports teams and a franchise willing to spend any sum to dominate. The Mets, Knicks and Jets — it is my sons’ fate to have been born into this unholy trinity of sports fandom — are not merely mediocre and dysfunctional, they are spectacularly so.

Let’s leave the Jets for another day. This week, sports heirs James Dolan of the Knicks and the Wilpon family, owners of the Mets, have reminded us that even great bags of money cannot paper over bad temperament and cluelessness.

Two months ago, the Wilpons announced that they would sell a controlling interest in the Mets to Steven A. Cohen, a local oligarch of questionable ethics (he had sidestepped at least one indictment on financial misdoings but paid a $1.2 billion fine to the government) and blessedly deep pockets. After months of negotiating the terms, the Wilpons pulled out of that sale even as they reaffirmed a desire to sell the team.

Various anonymous somebodies told reporters that a sticking point was that son Jeff Wilpon wanted to retain some control of the team after the sale, which Cohen had sort of agreed to on the assumption that Jeff’s role would be largely ceremonial.