Dish Network remains the wild card. It holds a large portfolio of spectrum in various bands and is building an NB-IoT network – which it labels 5G – primarily to satisfy FCC requirements to put spectrum to active use. It has talked about more ambitious 5G plans – but it did the same about 4G, and failed to deploy a network. Many have assumed it was sitting on the spectrum as assets to be sold at the right moment, but analysts at MoffettNathanson recently downgraded Dish shares (from neutral to sell), on the basis that the company had missed its opportunity to sell its airwaves. Craig Moffett believes a spectrum sale is the only good outcome from Dish’s “bewilderingly complex”…