For a start, adopting a blue ocean creator's
business model is easier to imagine than to do. Because blue ocean creators immediately attract customers in large volumes, they are able to generate scale economies very rapidly,putting would-be imitators at an immediate and continuing cost disadvantage. The huge economies of scale in purchasing that WalMart enjoys, for example, have significantly discouraged other companies from imitating its business model. The immediate attraction of large numbers of customers can also createnetwork externalities. The more customers eBay has online, the more attractive the auction site becomes for both sellers and buyers of wares, giving users few incentives to go elsewhere.