How legacy infrastructure can negate marketing and features

This one is just a short whimsical observation. The advent of flat screen TV's ended the need for the same type of entertainment centers for the home. Yet millions of homes have these as either stand alone's or wall built. My folks have been talking about replacing their TV in the living room with a flat screen HDTV. My father measured the space. Only one Brand, Sharp, can offer a 42" screen size to fit that space. So instead of Brand Name, Quality, Features, or Price...it seems luck is how Sharp will win this sale.