"religious corporations"
Well, technically the Catholic Church is one of the largest corporations on the planet:
-Multiple offices in nearly every country in the world (Even multiple offices in prime locations)
-Just under 1.25 Billion customers
-Over 415,000 employees
-Continued operation for well over 1000 years
-Insane levels of income (No public figures available, but given their real-estate assets...)
-Unparallelled levels of political influence (No taxes, laws preventing investigation of finances...)
-Extremely low cost vs. extremely high value of produced products