Why does Amazon.com need to worry about competitors in online shopping?
A)E-commerce is affected by the law of diminishing returns.
B)Internet technologies are universal,and therefore usable by all companies.
C)Internet shopping produces cost transparency.
D)The Internet enables the production or sales of substitute products or services.
E)The Internet increases switching costs.

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The Answer of Why does Amazon.com need to worry about competitors in online shopping?
A)E-commerce is affected by the law of diminishing returns.
B)Internet technologies are universal,and therefore usable by all companies.
C)Internet shopping produces cost transparency.
D)The Internet enables the production or sales of substitute products or services.
E)The Internet increases switching costs.

Why Does Amazon