Scenerio of cards:
What ever card gets in control of the industry, VISA, MasterCard, Discovery....
It does not matter they will still have to control the porn industry.
There were so many people that were not legit in the industry that the FBI wanted to follow up that they only choice they had was to go to VISA and work with them to control it....
If it's changes to another card the same will happen to keep things in order.
