For business purposes the EU is one jurisdiction, so if a company can find a set of practices that complies both with the EU rules and the US rules, and doesn't

For business purposes the EU is one jurisdiction, so if a company can find a set of practices that complies both with the EU rules and the US rules, and doesn't violate anything Canada, Japan, the UK, or South Korea requires, they can serve about a billion people. They can probably live with that.