The sad part about the unions was the "leadership" in far too many cases was just as greedy and venal as the exploitative management and ownership that employed the working people (The Teamster's Central States Pension Fund, for example).

In reality, the issue boils down to one of idolatry, in this case, the worship of money and power, each side (including workers, union bosses, management and investors) trying to screw the other out of as much as possible. We're all prone to it, in fact idolatry is the "sin" of the world (singular) the Lamb of God takes away.