This is actually so very doable in US, cutting deal with those like XFinity.
But if the TV manufacturer is smart in their spying game, they could also be probing for any public SSIDs to connect to when no local internet access is setup.
Why make it so complicated? Just include an IoT cell modem with an esim.
They don't have to cut direct with the operator. They can go up a little higher in the chain to a global "wifi offload" operator like Wefi.
https://www.wefi.com/wifi-offload
Then they can just get Passpoint access through a shitton of various endpoints.