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Even though 5G TV technology foundation is already ready, but network infrastructure is not fully ready. There will be no dominant leader who leads that ecosystem as of June 2019. In terms of Broadcaster's point of view, it will be definitely new opportunity can make other revenue source, but it requires some sort of investments - the legacy broadcaster having no investment won't get any benefits on 5G TV ecosystem.
I am curious what we will experience in near future by 5G TV.