[Cthulhu_]

That's down to the EU forcing that site to protect your privacy, which that US site can't be bothered with. Nothing to do with the WWW as a technology.

Blame that US site and its advertisers for trying to harvest your data for advertisers.

[waffleguy]

You can’t really blame anyone. A person doesn’t want to give away his/her information, and site doesn’t want to give away its information for free. They simply don’t see eye to eye.