welll Um Lifting - if you live in the USA or Australia you pay tax on world wide income
if you live in the middle east you pay almost no tax but then you have no social cover such as a pension, a decent law system or a lot of basic amenities
in general you get what you pay for in this world - I can see the benefits of a low tax but who in their right mind would want to be stuck in a tax haven for the rest of their lives?