Good points. Still though, I'm not sure install base alone will expand the overall market significantly, at least not quickly. Everyone I know with those device

Good points. Still though, I'm not sure install base alone will expand the overall market significantly, at least not quickly. Everyone I know with those devices already spends money on music in some form (subscription-based or digital downloads), or simply wouldn't pay for music at any price (they will milk the trial periods though). I anticipate many will switch to Apple Music, but that will be a switch, not a new form of spending. Also keep in mind that parents may be willing to spend $.99 here and there for their kids' apps (which adds up fast, but not in a way that feels obvious), whereas few will be happy to sign up for a recurring subscription without at least weighing it against the well-known competition.