Shares of both AT&T (T 0.16%) and Verizon (VZ -0.57%) have been under pressure this week after an analyst predicted that Google (GOOGL -1.51%) Fiber would be a big competitor long term. But it may take a decade for Google to build out enough infrastructure to be a big competitor with either company, and that still doesn't make a dent in the cash-cow wireless business. Analyst Travis Hoium discusses the biggest reasons why investors shouldn't worry about Google Fiber right now in the video below.