Answer:
It's because they provide communication and data security
The rise of christianity in the Roman Empire was different to that of medieval Europe.
In the Roman Empire, christians were persecuted at the beginning and very slowly increased the amount of people who believed in their god. However, as time passed, more and more people identified themselves as belonging to the christian religion.
In medieval Europe on the other hand, christianity became popular much faster, as there was not that much opposition, compared to the times of Roman empire.
I believe Economist such as Adam smith would believe that.
Adam smith is one of the original economists that popularized the free market system. He believed that even with less or no Government intervention, the Market will regulate itself to the power of 'invisible hands' (or what we known as the power of supply and demand that always move toward equilibrium)
It was an anti Catholic secret society established in 1887.