This is not the case in the United States. There is no presumption of privacy in public. In fact, there is a whole genre known as "street photography" that involves taking pictures in public without explicit consent of the subjects.
[0]: https://www.eff.org/deeplinks/2025/10/flock-safety-and-texas...
I think what's happening here is that people are trying to colloquially define "selling access to data" to fit the camera data sharing that Flock enables, and then saying that because you have to pay to be a Flock customer to get access to that data, they're effectively selling it. I don' think that's how data brokerage laws work. Flock doesn't own the data they're providing access to, and they're providing that sharing access with the (avid!) consent of their customers.
If https://legalclarity.org/can-you-post-someones-picture-witho... is to be trusted though, at least you get protection from your likeness being used for commercial purposes, though that seems a bit more limited than I'd expect.
Try taking an upskirt photo of someone in public without their explicit consent. You'll find that there are limitations to that under both Federal and State laws.
Obviously, the idea is to not disallow having someone take a photo of you as a background, passing figure as they take a front-and-center photo of their family, but not allow you to be the main subject unknowingly and especially when you object explicitly.
On the other hand, a photographer still owns the copyright to a photo, so a subject (including in a portrait) cannot claim it or distribute it without permission even if they can potentially stop the photographer from distributing that photo.
IANAL, but you are not by default allowed to use anyone's "likeness" for your individual profit.