I'm not sure creating a network without no internet access is going to be a long term solution. It's entirely likely that they will create future functionality in these devices to cycle through open networks and networks to which they have credentials for until they find one with internet access.
HDMI will share its connection through the cable as well. So if you want to use a Chromecast or a BluRay player, etc, then your TV can get internet through that.
I hear this speculated a lot; is there any proof of this being done in the wild? Not trying to discredit, I think it's perfectly plausible, I'm just curious if any companies have been caught doing it
If you’re using a chromecast and also trying to keep your tv from phoning home what are you even doing? I mean I guess one fewer place having your info is good, but...
I guess you could then add some user-important content to the walled-off network, like a basic SMB share. Maybe it will avoid disconnecting from the user-set network if it has user content. But yes, this isn't a very stable solution.
No vendor will use SMB to check for connectivity. They would check for relevant internet paths.
Though I doubt the companies would be ballsy enough to connect to unsecured networks, if that breaches laws in a country that the tv is sold it may have legal ramifications for the company.
Edit: then again my argument is based on logic and risk, not two factors marketing and sales teams consider very often..
