That is a very good point. It used to be that you had to keep your computer on to serve as your own cloud. If your electricity prices were high, this didn't m

That is a very good point. It used to be that you had to keep your computer on to serve as your own cloud. If your electricity prices were high, this didn't make sense. But now, the smartphone is the always-on computer. And it uses minimal power -- possibly even less power than cloud computing, which is deliberately oversized in order to handle peak loads. I suspect it's too complicated for non-geeks to figure out, though. There are also certain drawbacks-- for example, your phone has real storage limits, while the cloud can expand without user intervention.