[grecy]

When is it unethical for Facebook to pay less tax than the average working person?

When is it unethical for BP to say they're sick of cleaning up their oil spills and they're going to stop doing it?

When is it unethical for the bankers and mortgage lenders to do what they did in 2008?

When companies interact with us, they appear to have no ethical obligations of any kind, so it's amusing to think we're somehow bound to be ethical towards them.

[TeMPOraL]

Because you're making a general point - since when one's unethical behaviour justifies you to retaliate in kind? Two wrongs doesn't make a right, etc.

[JoeAltmaier]

Agreed, mostly. Consider though: the company cannot claim the playing field operates on ethics, when they don't play by those rules. Its reasonable then to claim "Caging a good price by lawyering the rules is fair play".