Re: @ twilkins
Errrr, no. You need an operating system to run the hardware, nobody is suggesting your basic hardware interface (drivers, desktop, etc) will be web based, but as people increasingly use applications that are web based, the OS becomes a commodity. There are free OSes available - Linux, etc that will will comfortably allow you to connect to a network, use a local printer, run things off an SSD/HDD, etc.
By forcing silly interface changes on users, the already high cost of implementing a windows upgrade goes stratospheric. Re-training, app upgrades, the windows license itself, all easily avoided.
As a long time Windows user (since 3.0), I find myself being drawn to Linux. Primarily because many of the business apps I use (my accountant is now entirely web based, I use Google Docs for general office type stuff) are not tied to Windows. I certainly won't be upgrading to Windows 8 - as an Android user there is little for me to gain from using a new interface that has nothing in common with either my 20 years of experience or my other devices.
My prediction - Windows 8 is going to flop, big time. It's been conceived to help Microsoft's market strategy (merge platforms) rather than it's users and it comes at a time when people are focussed on the bottom line.