I...have no sympathy.
Even if they kept the stores open as a form of a delivery and pickup hub, it's still disadvantages low income individuals or families that do not use technology heavily enough to be able to use the app, or the delivery fees/tip structure could make the cost prohibitive for low income folks.
Wal-Mart didn't design itself to fit into major cities or local economies but to change them in a way that serves their purposes.