ForbesBy Ryan Craig. In 2003, the iTunes Store unbundled the CD. Suddenly, consumers could purchase only the songs they wanted rather than the bundle designated by the artist and label. Sales of digital singles soared but overall revenue fell 50% in a decade.It is with good reason that cable companies fiercely oppose a la carte pricing. Estimates suggest that they could lose up to half of their current revenue with such a model. Live streaming options from HBO and Netflix, are already beginning to chip away at the cable bundle. More...