Jobs are often passed from father to son, and some members are now the fifth generation of their families to hold Local 1 cards. [Union boss] Mr. Claffey, whose total compensation in 2011 as Local 1’s chief was $277,000, is one of six Claffey brothers in the union.
(It is most definitely a band of brothers. The union is still overwhelmingly white and male. Two years ago, it convened a meeting of its Sisters Committee for the first time, drawing 28 women, which the union’s newsletter said was nearly 20 percent of all the women in the local, suggesting that there are around 140 [out of 2,600].)
That's Econ 101, as rendered in Business Strategy 101: find yourself a defensible piece of monopoly power, and defend it.