Horace Dediu of Asymco has produced a much better graphic and analysis to go along with it: http://www.asymco.com/2012/01/17/the-rise-and-fall-of-person...

Where is the other half of the equation.

What's happening with Microsoft in the server room? All these tablets and phones and other assorted toys don't make very much of their own data. They are fed with huge server farms. I don't see Apple making any of those servers and server operating systems currently.

Server rooms are increasingly Linux only with a token Exchange server. There are definitely lots of Microsoft servers but they are increasingly there for legacy reasons like a development team that opted for .NET over Java a decade ago. Most new deployments and all that popular cloud stuff is happening on Linux. Even Microsoft was forced to support Linux on Azure.

Too bad much of computing these days is consuming...

Yep. Back in the day, before the internet took off, there wasn't much you could do with a computer but develop software, process words, and play games locally. A few people lurked on BBSs — remember them? Remember acoustic couplers?

The internet has swamped all that. Now, computers (sized PC and downwards) are primarily a conduit to the internet, and most computing is consuming and creating internet content, be it web surfing, emailing, social networking, shopping, torrent downloading, whatever.