Re: "I wonder how many of those "Iranian Americans" are actually Jews that fled from Iran. "
It's more like they're all Iranians who fled from Iran!
The reason they're leaders here is because they were intelligent enough to reject all that the Mullahs represent, and they chose to live free here in the U.S.A. where their talents could bear fruit rather than submit to theocratic 6th Century tyranny.
As a matter of fact, most, if not all, of the well established Americans of Iranian birth fled Iran rather than live in a filthy cesspool under Muslim Maniac rule ... they came here after the fall of the Shah and they have no intentions of going back until "The Islamic Republic" is sent back to the caves from which it came.
We don't ever hear of these American leaders of industry who are of Iranian descent tearing down America or threatening Jews -- because they're good Americans who understand that any race and any nationality which embraces American citizenship and American values can live life to the fullest; free from the fear that exists throughout the Muslim world.