Bitcoin is going to be number one payment gateway in near future.Most of the online payment gateway will accept bitcoin as main payment option.
Well, I do agree with that statement because bitcoin is the first and the only platform that allows digital transactions and it is much more powerful then other altcoins and has a reliable lifetime frame. In near future it will overcome the paper currency and normal bank transactions. I have read many online ecomerce stores allows Bitcoin as a payment gateway if I am not wrong.