The US carriers’ land grab for fiber and fixed wireless assets continues. Verizon has completed its acquisition of fiber provider XO Communications, which also brings it access to high frequency 5G spectrum, while AT&T has made its own acquisition, of FiberTower. Meanwhile Dish, which remains the dark horse in the US wireless and quad play race, has taken control of important fiber and spectrum assets from its sister company EchoStar. And Google is expanding its fixed wireless footprint, courtesy of its WebPass acquisition, as well as conducting tests in high band spectrum. For now at least, this is not about cutting edge 5G use cases. It is a continuation of the old game of getting spectrum on the cheap –…