Which ISPs are giving out APs with no key needed and no captive portal? Every one that I’m aware of requires some manner of secret to login to the shared AP.
There are literally thousands of paranoid security researchers who would love to post about something like this (hi), and none of them have. That’s hardly conclusive, but if it’s not good enough for you then maybe you should reconsider whether society is the place for you.
This paranoid alternate reality where tv companies are paying every ISP for backdoor access is very, very far away from flipping the “opportunistically join open networks” bit. It’s also not borne out by either research or logic.
> at all costs
Nothing works like that. They don’t care about you, beyond the pennies they can make. If it costs (and it would) they won’t do it.