问答题 Unlike specific products or technologies that can be copied, core capabilities cannot be purchased on an open market. Moreover, intangible assets such as firm reputation tend to attach themselves to capabilities, so that even when a competition matches the capability on an objective basis, the original firms image and reputation tends to enhance the durability of its advantage. Because core capabilities and intangible assets are acquired over an extended period in a unique social context, they are difficult, costly, or even impossible to imitate. In a recent survey of chief executives, for example, most said it would take more than ten years to replace the firm"s reputation if it were suddenly lost.