Agreed
Someone else mentioned Apple, and also noted their questionable marketing strategy. I don't think you can discuss the popularity of one product without mentioning why it is more popular than it's competitors.
McDonald's is the most popular burger joint (based on either net sales or number of stores), but I'm sure most of us can agree they don't have the best burger. If you're going to discuss why they are the most popular, you may have to mention Burger King and Wendy's for comparison purposes.