Walmart got big because it revolutionized retail trade and introduced data management on a very large scale.
Walmart knows to extremes what customers want and then provides it
There is a near Biblical acceptance here that Walmart sell China junk and that is not true. Walmart buys world wide, including the USA. It canbe argued that most of what Walmart sells is of USA origin.
Don't use facts about WalMart. Some guy will say everything he saw in the store was made in China, like he looked at all 140,000 (more?) SKUs.