... is thinking this way too. Right now they have separate PC, tablet, and phone. But the real key to a single device is making is a real single device. If I switch OS environments from phone to tablet to desktop, what's the point of using one device. I think Motorola fails here by introducing some limited environment in their dock, when Android already does the job.

HP is noot just putting WebOS on phone and tablet, but on desktop PCs. As many transition from being desktop-centric to phone-computer centric, this sounds exactly like what many users will want. The only magic in Windows is that it has the apps you need. But this is changing faster than ever before in history, simply because mobile devices have passed a threshold: good wireless networking, more performance than desktops of not all that long ago, and good OS underpinnings (GNU/Linux or BSD/Mach).

The PC became more than what most people actually need in a computing device over 10 years ago. Niches stil need the performance, but not everyone. Pocket devices are now approaching that same level of useful performance, but with better battery life, portability, and user interfaces.