McDonald’s is closing all five of its CosMc’s pilot locations this summer, just 18 months after launching the beverage-focused concept to much fanfare and long drive-thru lines outside its first store in suburban Chicago.The fast-food giant insisted the pilot program paved the way for a major new push into the competitive specialty drink market — this time from inside its core restaurants.“The main goal of the CosMc’s test was to create a launchpad for learning for the McDonald’s System — and the insights w ...