Car dealerships are a good corollary: while most cars are still getting purchased at the dealership, the level of homework a customer has done before showing up is markedly different
Next Wave of Fitness Brands — The Time Has Come
Jason Jacobs
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Somewhat poor analogy as car dealerships are protected by legislation; you *can’t* buy a new car somewhere else.

The bigger point that consumers are more educated and perhaps shopping more online as a primary mechanism stands.