First there's an assumption that computing is now in a post-PC phase. This is the view from people who sell stuff as opposed to people who use stuff. If you've got a PC that works you use it but tough for the people who want to sell you another. The market is more or less saturated so people flogging PCs and their bundled software have either got to put up with it or offer something new and desirable. In order for it to be desirable they really need to pay attention to the users and I'm not convinced they're doing that.
As to the idea of a unified experience that reminds me of icons on a lot of consumer hardware - designed to be equally incomprehensible in all languages.
Biting the hand that feeds IT
