Dish Network is six months behind on its 5G network roll-out plan, something its chairman, Charlie Ergen, acknowledged on the company’s most recent earnings call. “We’re six months behind where we thought we’d be. It’s my fault. We just didn’t maybe anticipate that we would have to do as much on the technical side,” Ergen told analysts. Dish is required by the FCC, as a condition of its licences, to cover 20% of the US population with 5G by June 14 this year, but so far has no commercial services on offer, despite its original pledge to launch in several cities by the end of 2021. Ergen’s comments highlight some of the challenges that face greenfield deployers of virtualized, open…