It’s like the brain in a vat/evil demon: https://en.wikipedia.org/wiki/Brain_in_a_vat.

I am not an expert. Dashcam legality differs across EU countries, but generally you are not allowed to share dashcam video.

https://www.ddpai.com/blog/dash-cam-legality-in-eu/

In Europe, they often don’t. Enforcement is difficult though.

Yes, and many of those are illegal as well. Many home cameras (as part of video doorbells) are pointed at public streets, and they are usually illegal as well.

See for example: https://www.autoriteitpersoonsgegevens.nl/en/themes/camera-surveillance/camera-surveillance-at-organisations/rules-for-camera-surveillance-for-organisations

Surely it will get there if we build enough datacenters?