[avanderveen]

Semi-unrelated but, plenty of corporations see these fallacies as the best (and sometimes only) tools. In large markets money, political connections, and entrenched position are king.

See http://en.wikipedia.org/wiki/Crony_capitalism for details on political abuses, and http://en.wikipedia.org/wiki/Barriers_to_entry for examples of these fallacies.

There's no such thing as open market as long as there is also government and regulation (not that government or regulation are bad or anything).

But you're right, they're not the only tools. They're just (unfortunately) the strongest ones for those than can wield them.