I say it's time for the notion of things "being over" to be over. The PC is absolutely going to diminish in mass-market relevance in favor of devices, but there

I say it's time for the notion of things "being over" to be over. The PC is absolutely going to diminish in mass-market relevance in favor of devices, but there will always be a PC market for hobbyists and power users (though the economic factors may shift, potentially turning commodity parts into luxury items). There's plenty of room in the computing ecosystem for both web sites and apps, for both closed and open platforms, for both PCs and devices, and whatever other divisions you can think of. Even if one thing "wins", it doesn't mean the other is automatically erased from existence.