There was a really great piece this week on the freight train that is Android:

So here is the kicker. Android, as well as Chrome and Chrome OS for that matter, are not “products” in the classic business sense. They have no plan to become their own “economic castles.” Rather they are very expensive and very aggressive “moats,” funded by the height and magnitude of Google’s castle. Google’s aim is defensive not offensive. They are not trying to make a profit on Android or Chrome. They want to take any layer that lives between themselves and the consumer and make it free (or even less than free). Because these layers are basically software products with no variable costs, this is a very viable defensive strategy.

His final comment is spot on:

In Silicon Valley we like to make light of industries that are facing digital disruption such as newspapers, the record industry, and the movie industry, suggesting that their executives “just don’t get it.” Perhaps now we are witnessing the disruption of not just analog businesses, but also formerly interesting digital businesses as well.