"Religion is the opium of the people". Clearly, when one develops a product that rubs people the right way and inundates them with the right dopamine levels, one has achieved a product whose level of flexibility towards pricing, re-use and viralization is given.
I think the quote is much more interesting when the rest of the phrase is added : "Religion is the sigh of the oppressed creature, the heart of a heartless world, and the soul of soulless conditions. It is the opium of the people."