bell went away, the technology they were the monopoly over didn’t

Leaded Gasoline.

If we don't like a technology we can easily get rid of it in practice.

And by that, I mean that Leaded Gasoline is infeasible to be profitable anymore. So no gas station serves it any more.

And please, it will be easier to regulate all public camera companies than to regulate all independent gas stations. So don't give me any crap about difficulties. Especially when said companies are all individually being purchased by government services like police.