Outside of NYC Wallmart has significant marketshare over grocers. https://ilsr.org/wp-content/uploads/2019/06/Walmart_Grocery_Monopoly_Report-_final_for_site.pd

Outside of NYC Wallmart has significant marketshare over grocers. https://ilsr.org/wp-content/uploads/2019/06/Walmart_Grocery_Monopoly_Report-_final_for_site.pdf https://ilsr.org/wp-content/uploads/2019/06/Walmart_Grocery_... They've butted heads with their vendors over the years, and drive pricing decisions nationwide.