A $500bn Amazon would be more valuable than a $500bn Walmart though. Walmart succeeds by being the low-cost leader, which inherently limits their margins. Amazo

A $500bn Amazon would be more valuable than a $500bn Walmart though. Walmart succeeds by being the low-cost leader, which inherently limits their margins. Amazon on the other hand has the capability to generate massive margins due to the network effect in it's marketplace.