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The Enterprise value proposition is based on a simple insight: renting a car meets different needs at different times. Hertz and its followers in the industry built their business around travelers, people away from home on business or on vacation. Enterprise recognized that a sizeable minority of rentals, roughly 40 to 45 percent, occur in the renter’s home city. If your car is stolen, for example, or damaged in an accident, you’ll need a rental.
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Joan Magretta (Understanding Michael Porter: The Essential Guide to Competition and Strategy)