Certainly, but as you said, they made this money in contexts where modern Western economic mechanisms and controls were either nonexistent or severely lacking.Well they did good abroad ; in Africa and South America ; they made a lot of money.
Usually they are good traders but very few are able to make the transition from traditional traders to business men.
As for the christians; if they were that good we wouldn't witness the current financial collapse! As the christians are in control of the banking sector.
This isn’t to say that their money wasn’t well-earned, but as you pointed out, they never transitioned from the category of “trader” to “major business force to be reckoned with....”
This is why for instance we don’t really have Shiite equivalencies to major Christian Lebanese tycoons like Carlos Ghosn, who is known throughout the Western world (and East) of being a corporate genius....