You start with being ethical. In the online business, that pretty much covers most things with the exception of VAT, the clusterfuck known as &quot;intellectual property&quot;, and the fine line between freedom of speech and hate speech. (I&#x27;m ignoring doing business in repressive regimes, because there you&#x27;ve only got yourself to blame.)<p>The only reason why US companies are in trouble in Europe is because they use unethical practices that happen to still be legal in the US.<p>However, it was pretty obvious up front that those practices are unethical and illegal in most of the Western world.<p>So please, stop whining about the complexities of international businesses when the root cause is simply a lack of basic decency.