Linking of phone number to name (passport etc.)?

Hi Guys,
so basically, in a age where most countries (see privacyinternational’s long reads 3018) restrict sim cards to people verifying themselfs via id, I was just wondering, who could actually get said sensitive, yet logged data? Of course, law enforcement etc, but general people or companies, I’m not quite sure. Of course there are always still options of buying numbers for sms-verification on something like moneromarket, but yeah, just having multiple numbers one can use for everything would be nice.

right, forgot that, especially leaks. I also hadn’t considered databrokers, since often times the company conducting the sms checks/verification isn’t mentioned anywhere on the site where one signs up.