How much of your paycheck do you save? Apple can afford to wait until the government passes a Homeland Investment Act type law to avoid paying those taxes. OTOH, most people need to pay for things like food, clothes, whatever they're using to post comments on websites, etc.
This is a bad analogy to start with, but Apple's profit is around 24% of their revenue, which would be comparable to saving 24% of your paycheque, which is not at all unreasonable.