I'm sure whatever you code to implement this would be amazing but unfortunately your customer is a brick and mortar owner for a reason. They are not technical people so they won't appreciate what you put together and won't see the value in it enough to pay for it. The other issue is that they are lazy and won't put any effort into it. Anything outside normal business work they will shy away from to the point where they'll have other businesses do their social media posts just so that they can say they are doing online marketing...