I worked in the Firearms industry for several years and witnessed an amazing thing.
I was at a trade show open only to wholesale buyers, working with one of my manufactures. The owners 24 yo son and I were the only ones there when a man walked up to me and wanted to discuss purchasing our line. His business card identified him as a walmart buyer.
I called the owners son over and handed him the card. He looked at it, handed it back the the gentleman and said, "We're not interested! We don't like the way you do business." turned his back and walked away.
I'm not much of a fan of Walmart either and that was reinforce when they charged my late sister-in-laws estate $28 .....to close her retirement account.