Don't be so sure about that. They have a long history, going back to the seventies, of selling average products while maintaining a strong public image of premium, top-notch brand, just like Bose for hi-fi loudspeakers (sorry for any Bose lover). Their marketing srategy is actually very efficient, consumer-orientated. It's all in the image. Everyone knows Memorex, even you grandma I bet.
The relationship betwen the quality of a product and the actual sales is far more complex, and in a way thinking that a good product will sell and a bad product won't, is a little like believing in fairy tales.... it's sad but advertising is so efficient that most people will prefer to buy a "comfortable" lie than to search for real quality. It's true for any product actually. Only a small percentage of consumers are looking for "genuine" quality.... the rest buy, more or less, what they're told to.