Walmart? Every grocery store? Its hardly required to shop at Amazon if your point is it's a true monopoly, I'm not sure what domain you're trying to say they're

Walmart? Every grocery store? Its hardly required to shop at Amazon if your point is it's a true monopoly, I'm not sure what domain you're trying to say they're the only competitor in. Prioritizing your own brand has been the norm at every grocery store I've ever been to.