I read a news story about this very thing the other day, @RIP-Felix. Stores that are Pokestops are setting up accounts just to use lures to get people to come to their stores to catch Pokemon. It's a fairly cheap way to help drive foot traffic. Yelp even has a Pokestop filter already for restaurants.
I went to a minor league baseball game Sunday, and all 4 corners of the field had active lures on their Pokestops for the entirety of the game. I'm not sure if it was the team, or random people setting them off, but that's still a good way to get people to walk around, and past, all of the concession stands.