it’s much more difficult to find the address of acquaintances we know in daily life
Not entirely.
Ever since I bought my home a few years ago, I have been plagued by phone calls from random numbers of people who know my address, my first and last name, and my phone number, as far as I know in terms of personal information goes. The purchase price of my house is also public information which can be something I may not want everyone knowing as well.
I don’t think this should be legal. I understand somewhat why but it’s still creepy and it’s really obnoxious when the “investors” are offering me half of what I purchased. It’s just spam at this point. And I don’t think people should have this much information about me. People I have never met in my life or chosen to do business with (my mortgage company and insurance provider are entities I have chosen).