Although Samsung Pay has the hardware technical capabilities to work at more locations than either Apple Pay, Google Pay or any of the other mobile payment options, that doesn't mean you still don't need support on the back end of things. For any mobile payment system to work, you still need to be able to function with each and every credit card or debit card that your customers may want to use. You still have to "load" the payment app with funds from somewhere...
Luckily for Samsung, their support base keeps getting bigger and bigger. The latest report indicates that Chase Bank has added their support to the Samsung Pay hopper. That's a very big player to jump into the mobile payment support fray, adding further legitimacy to their system. According to multiple reports across the web, whenever folks compare Samsung Pay to any of the other mobile payment systems, it comes out ahead simply by virtue of working so easily at more locations than the others. The more support Samsung Pay gets on the back end from various banking agencies, the more it will push mobile payments to the mainstream.
Please speculate on how long it will take for mobile payment systems to replace plastic credit cards...