When this has happened at individual Walmart stores in the past, the company would immediately shut down the store and everyone would lose their jobs. A couple years later they would build a new store within 20 or so miles of the old store, free of the union. This was obviously financially painful for Walmart, but it served as such a strong signal to employees to not even try to unionize that it must have paid for itself many times over given Walmart's thousands of stores. I wonder if Amazon has been taking notes from them on this.