But here's where it might go.
Verizon and other cell companies bundle streaming apps with their plans. It's really not a far leap for them to bundle a TV as well. Especially if TVs get really expensive due to whatever factors - get a 120" TV for just $30 extra on your bill over the next 5 years. And Verizon could contract with an OEM to make a Verizon-specific model, and put a 5G modem in it, and lock it to Verizon service. Verizon's just an example here, AT&T, T-Mobile could do the same.
It looks like shit, is difficult to install, and costs an arm and a leg, but at least it prevents egregious privacy violations from your average chaebol or CCP-intervened corporation!
I'd doubt that any such coating would be good for viewing quality.
You only view your TV from inside the Faraday cage, of course.