Organized labor has most of the same problems as organized ownership and capital. Ownership and capital has some unique problems. Labor has some other unique problems. This shouldn't surprise anyone.
Unless you're arguing for the elimination of the market system, "this structure in a market economy is prone to corruption" isn't a dispositive argument, or really an argument at all.
Unless you're arguing for the elimination of the market system, "this structure in a market economy is prone to corruption" isn't a dispositive argument, or really an argument at all.