I think that number is overstated.
How many people buy Motorola phones, despite their huge Motopride initiative, and their mandatory homophobia workshops starting in 1994?
How many still buy Kodak cameras, despite firing a longtime employee who didn't want to receive homosexual-pride oriented messages through the corporate e-mail system?
Do we really think that consumers are that turned off by the pro-homosexual pandering? Again, it's a decision that they have to make, but any path has costs to their business. See this old article from the NYT for more info about gay advertising/marketing. I think that many they are taking subtle approaches, but places like http://www.commercialcloset.org are making it be fed more and more into the "mainstream"...