Most grocery stores in every place I have lived have security cameras so that if you did something illegal you'd be identified very quickly. At this point this is even true of small bodegas.
Also scammers can't waltz into my grocery store from the other side of the planet and wreak havoc.
Ultimately you can use privacy enhancing tools, just like servers can choose to block them. I wish there was a better system but that's what we've got.
A security camera, on its own, doesn't tell the grocery store who you are. There was a time when CCTV didn't even exist and yet we still had commerce.
"What we've got" isn't "the best we can do". There absolutely are better possibilities that would protect consumers. The best way to ensure we never get to experience those better systems is to shrug our shoulders and passively accept whatever treatment we receive.
Also scammers can't waltz into my grocery store from the other side of the planet and wreak havoc.
Ultimately you can use privacy enhancing tools, just like servers can choose to block them. I wish there was a better system but that's what we've got.