Worldpay + Vantiv, and First Data + CardConnect? The world of payments seems to be shrinking. With every day it seems that payment companies are gobbling each other up. But it doesn't stop with other payment companies, they're doing it with POS companies too! After merging with Global Payment Systems, Heartland Payment Systems has been busy. They've been buying up POS companies like PC America, Dinerware, and Digital Dining.