I'm absolutely positive I could if they were getting other store owners to help them track me.
What I don't understand is why this is unacceptable if they do it to a single person but perfectly normal if they do it to all their customers. IMO that should make things worse, not better.
Let's put it this way. You'd get a restraining order against someone if they followed you around all day, logging when you woke up, ate, who you talked with (even if they don't hear the conversation), where you went, and when you went to bed. That's clearly stalking, right? So why us it suddenly acceptable when it's being done by some guy named Mark who is stalking a billion people instead of just one?
We clearly differentiate this from being a regular customer at a store. If I'm a regular at Joe's Corner Market and get a sandwich every Wednesday for lunch then he remembers me because we're talking face to face and making conversation. It's personal. There's clear consent in what I'm sharing and there's a clear expectation that Joe isn't going to use that information to manipulate me or follow me around town. Our interaction is limited to the store and maybe bumping into each other on the street. It's clearly not stalking, we're just friendly. The same way your partner might know about when you wake up, go to sleep, eat for breakfast, and all that same stuff. Your partner isn't stalking you.
[Edit]: I want to encourage the above comments. Doesn't matter if recursive4 believes the other side or not, I want these conversations to be front and center. I like to see the other responses than mine as well and I think these help us refine our arguments and by being prominent they help others be convinced and join us. So while I know we don't usually talk about how to upvote/downvote, I'll just say "vote strategically rather than agreeability" :)