look at this example Cost to merchant for accepting @MasterCard for coffee: 0.30 USD but Cost to accept @Bitcoin: 0.01 USD, that kind of things makes MasterCard in real trouble and they are in big doubt about their future, MasterCard losing their market share because of this amazing crypto currency.
u drinks the coolaid. Anybody been in corporate world long enough knows that companies adapt and be ruthless if survivial at stake. if btc at any point in danger of taking big chuncks of customner away from mastercard and visa, these compabies will react. they will cut their charge to retailers from your $0.30 down to $0.01 to match btc if they have to, lay off workforce to cut costs, they have most of the infrastruture in place now so can go lean on capital investment for a few years until they ride out the btc threat. Heck, they could even afford to PAY retailers for a short while. Folks, you all think in 2D, the big corps do 3D around ya.