Yeah so that logic only works if people make informed decisions and they don’t, that’s why society the size it is at the moment only works with a government in place setting some ground rules and preventing people from being morons… Our trying to anyway.
Also, the internet is not hosted in international water as far as I know so there’s no reasons it can’t be regulated… Hell, I’m sure you’re very happy (or hope that you are) that CSAM isn’t just everywhere in the name of net neutrality and letting people do what they want on it.