For most people, it's time to move beyond the current computer paradigm of OS + Applications + Internet + File System. ...
Go ahead, nobody's stopping you. However, don't expect me to be impressed with it, much less adopt it, unless it does more for me than fill my ear with marketing babble.
The OS wars are largely over.
To this I say: you ain't seen nothing yet. The OS wars are not over until Microsoft has its proprietary stranglehold removed; whether it takes a few years or many, computing is not going to progress until the MS monoculture is broken up, and some real fresh ideas can enter the market. What's best for Microsoft is not what's best for progressing the science of computing.