Apple mid-90s might have been _trying_ to do everything, but they weren't getting there. Yes, they had a lot of products, but they were mediocre and lacked the installed base and mindshare of Windows. It is easier to focus when you aren't walking away from successful markets or customer expectations.
Microsoft nowadays Does Everything because it is evolved from a corporate strategy of dominating the OS space by providing users The Way to realizing the potential of computing technology. They wanted to provide CIOs and developers with the basic foundation, so they had to offer tools for all sorts of stuff.
Its future position is eroded as browsers "embrace and extend" to swallow up much of the daily activity on the desktop, leaving those users free to look at devices on dimensions other than satisfying an OS utility requirement, and as the iPad carves out a consumption-dedicated computing space.
Surviving into that space will be a very different challenge than Apple had. They have to move from successful businesses into new computing usage paradigms. Those involve a kind of user-experience focus that Microsoft hasn't previously needed, and couldn't match with its strategic utility role in the first place. It will take a very different vision and focus than what brought them here.
I agree that slapping a new logo on the current structure won't do much. But if that new branding is aspirational, its most important audience might be Microsoft's own employees, telling them that their past successes don't matter so much and that they have to get into a different frame. And quickly.