[D_Alex]

I think the problem is that in this case the "market system" is not a free market system, since the ILWU has a monopoly protected by regulations, which they somehow managed to get implemented.

Is that a good thing? Consider that the handling of each container costs $300, about double what it does in say Rotterdam. Who pays for the difference? The American consumers.

Or suppose all the fast food work was, by law, under the Fast Food Worker's Union. They demand that their members pay is equal to the ILWU, $227,000 inclusive of benefits per annum. Now a Big Mac meal cost you $15. Does your argument still hold?

And consider also this: such unions are often cesspits of nepotism and corruption, usually manifesting as union not admitting new members without some special considerations.