The purpose of a business is to get and keep a customer. Without customers, no amount of engineering wizardry, clever financing, or operations expertise can keep a company going.
The true purpose of a business is to create and keep a customer, not to make you money.
Ideas can be willed, and the imagination is their engine.
People don't want quarter-inch drills. They want quarter-inch holes.
A product is not a product unless it sells. Otherwise it is merely a museum piece.
Kodak sells film, but they don't advertise film; they advertise memories.