In order to legally drive we basically enter into a contract with the state agreeing to the terms it set. Keeping a current license, registration, insurance etc. During a traffic stop, it is a requirement to hand over the documents, if asked, so they can verify you are within the law. Atleast in the parts of the US that I am familiar with. Same for travel and other government documents, if you want to legally move between borders, you agree to their terms or stay put.
Having random creep take a pic of someone and get their address so they can visit later on, would be a very big problem.
Most people travelling in private conveyance are not engaging in commerce.
Have you researched USSC rulings about private travel?
There is a flip side to this in places like Russia. If you are at a party and want to talk to someone, you might want to lookup whether she is the wife/girlfriend of the local crime boss/politician/general first.
A private company is accountable to nobody, trusted by nobody, and likely accessing "public" information that was publicized by an entity other than the individual. They are collecting the information purely to make a profit, not to (again in theory) increase public safety. Their entire purpose is to abuse the information for purposes it was not intended for.
What data was available? Where they live? Who their parents are? What school they went to? What car they drive? Or even creepier, like hobbies?
There is no scenario where walking up to a stranger and starting a conversation about their personal information is going to come across as normal.
(Such scenes are in probably 75% of all movies. It is an old device for introducing characters.)
And his personal assistant is a person which is a building block that innately fits into society. Any given person has some level of morals and integrity which would limit what they were willing to do with their knowledge. And even if they don't, people can be brought to justice if they abuse their knowledge/skills or otherwise have some kind of public pressure used against them. An algorithm cannot be imprisoned or even really destroyed and doesn't care one bit what it's used for because it doesn't care about anything at all.
Some of these things seem inevitable, but that doesn't mean they aren't creepy!
What you mention is any random person identifying any other random person (ignoring the creepiness of taking a picture of someone without their consent). And using that to track down identifying information about them.
Just because it may be legal, doesn't mean it isn't creepy for someone to take a picture of a random other person.
Big agencies have entire dossiers on their clients for the sole purpose of brushing up on your info before a meeting so they can come across as super friendly and high touch. Even your hairdresser probably does this.
Main difference being that it isn’t creepy to keep track of things you can’t remember when being friends with hundreds of people is part of your job.