Also, support for unions is waning. Here in Philadelphia, union support is at an all time low. They were rendered toothless in recent elections for the first time ever, and a series of bad press (arson, assault, and destruction of property by union members) and continued ties to organized crime have worn thin sympathies.
For good reason. They prevent accountability among police: http://reason.com/blog/2014/08/14/police-unions-produce-rule....
They also prevent educational innovation: https://www.amazon.com/Special-Interest-Teachers-Americas-Sc... and pr event urban schools from even functioning.
As the topic article points out, construction unions are attacking the housing supply.
Should it be a surprise that anyone who pays attention is unhappy with unions?