For example, if you walked into my coffee shop, I would be able to lay eyes on you and count your visits for the week. I could also observe were you sit and how long you stay. If I were to better serve you with these data points, by reserving your table before you arrive with your order ready, you'd probably welcome my attention to detail. However, if I were to see you pulled about x number of watts a month from my outlets, then locked up the outlets for a fee suddenly - then you'd rightfully wish to never be observed again.
So what I'm getting at is, the issues with tracking appear to be with the perverse assholes vs. the benevolent shopkeeps of the tracking.
To wrap up this thought: what's happening now though is a stalker is following us into every store, watching our every move. In physical space, we'd have this person arrested and assigned a restraining order with severe consequences. However, instead of holding those creeps accountable, we've punished the small businesses that just want to serve us.
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I don't know how I feel about this or really what to do.