ATSC 3.0 is ending 2020 on a high as Comcast begins testing the hybrid broadcast-broadband technology over HFC network infrastructure. Given how ATSC 3.0, also known by its consumer-facing name as Next Gen TV, is also being touted as a broadband access technology by the FCC, Comcast’s endorsement is easily the technology’s biggest potential deal-breaker to date. While there is cause for celebration as the technology is unleashed by the cable TV giant, it also signals how a huge share of the ATSC 3.0 market opportunity could fall to a single vendor – Harmonic. Harmonic’s technology is buried deep into Comcast’s cable network infrastructure, having worked collaboratively on the development of the comprehensive CableOS platform. But more significantly, only days…