> What law is preventing Best Buy from telling TVManufacturer

No law: reality and PCI standards prevent this. And of course, the manufacturer could get a subpoena after enough process. This also assumes the TV was purchased with a credit card and not cash.

> And once the SIM connects near your house

> what is preventing the phone company from telling

Again: reality and the fact that corporations aren't cooperative. A rough location doesn't help identify someone in any urban environment. Corporations are not the FBI or FCC on a fox hunt.

Can you cite a single case where this has happened on behalf of a corporation? These are public record, of course.