Samsung and Huawei are doing 5G,

https://www.techradar.com/news/samsungs-5g-8k-tv-promises-to...

https://www.techradar.com/news/huawei-is-developing-a-5g-8k-...

Cynical, sly enthusiasm. I just can't imagine 5G bands devoted to adverts passing invisibly through my skin. It is too much like the adverts in your dreams skit from Futurama.

Again, it is increasingly hard to separate satire from prophesy.

Maybe in the future the TV will play barely audible ads when it detects you're asleep.

Don't give them hints!

Or partnerships between the TV company and the ISPs, to put additional wireless networks on their consumer routers that are accessible to the TVs.

Or Amazon Sidewalk for the mesh network version of this.

Comcast does this in its routers, and no longer allows you to opt-out. They also have all the advertising ecosystem integration, of course.

That's why one should never use ISP-provided routers. Since ISPs can update/control devices connected to their network, buy a modem without WiFi: anything downstream of that is your network.

Not everyone lives in higher density housing, so open wifi networks are not always a given. Also a built-in cellular modem would be antithetical to having a lower cost TV set based on ad subsidies.

I would worry more about mesh networks like Amazon sidewalk

Amazon has had "free" cellular service in their Kindles for over a decade, I'm pretty sure TVs have more margin than that.