If taxes and morality have nothing to do with each other, then the answer is simple: Everybody should avoid paying taxes.

But if we borrow a lesson from moral philosophy just to help us with that thought – Descartes universality principle might help us: If everybody (corps, and individuals) avoided tax, would our system still work? Would it be a system that encourages growth (a requirement for capitalist enterprise)? Would our governments revenue system completely dissolve? Thus our governments completely dissolve? Is "Taxes aren't a moral issue" equivalent to "I want pure free market anarchy"?

Great business idea: Create a corporation that represents employees, with offices in every country. It then signs your employment contract, pays you in a 0 income tax territory and does all the same funny money games Apple et al do.