At least in the short term, I think the economics will prevent stores from using this for marketing data. Operating these drones has to very, very expensive and I don't think knowing about your driving habits for a few miles is worth the cost.

The only reason these things could be economical in the short term is because theft costs retail companies an insanely high amount of money.

However, this might change if these drones become cheaper to operate and purchase.

I would think there's some crime that would prevent people from using these to the extremes. I am almost certain it's illegal to put an air tag on someone to track their whereabouts and I would also think those laws would apply here.