That's clearly one of the reasons she gives, but I wouldn't call it a clear reason. It doesn't make the point she cares about, as she herself says. Her claim (a

That's clearly one of the reasons she gives, but I wouldn't call it a clear reason. It doesn't make the point she cares about, as she herself says. Her claim (approximately) is "Costco's way may work for Costco but it wouldn't work here, because numbers and business". But people used to argue the same about how it would never work for Costco either.