Interestingly if you read the Qu'oran you see that Mohammed described a religion tailored to the needs of traders and travelling merchants, and he explicitly says that when in other countries and cultures the devout must respect their customs and laws as they would their own. The whole "you must allow my rules to over-ride yours even in your country" crap is a modern invention of the Islamist (ie polictical) rather than Islamic (religious) zealots.
"Orthodoxy" in any religion is almost invariably a political rather than religious culture.
PDR