Build fixed network infrastructure and they will come, agreed one half of a panel featuring cable industry experts from CableLabs, Technetix, and Adtran, batting away notions of 5G emerging as a competitive threat to broadband. The other half, comprising execs from Liberty Global, ATX and The Volpe Firm, reserved caution that broadband players should keep a beady eye on fixed wireless access both as a challenge and an opportunity. Nervous laughter even rippled around the panel at one stage upon suggestions that everyone could retire comfortably in the knowledge that hybrid fiber coax networks will remain crucial delivery pipes in 20 years’ time. The 5G lot might scoff at these statements of confidence from the cable community, but this is…