When you go to a store make sure you ask if they accept bitcoin. The reason they implement accepting it is because people ask for it. If they have never heard of it they might never look into it unless a few people ask if they accept it.
Same thing with apple pay or samsung pay or paypal, so many people asked about it and they implement it into stores, or the companies pay stores to implement it so people see what it is from the advertising signs that say "we accept paypal here". We need to pay some businesses to put signs out about bitcoin or ask them to use bitcoin and explain the benefits.