Agreed on the shuffling of "$uperstar$" point.
On tech company's having different set of demands, well, I'd say it depends how broadly or narrowly you define it. Being a superb drink company boss doesn't necessarily mean you'll be good running a tech company, but nor does it necessarily mean you won't.
After all, a lot of a CEO's job is about company structure, understanding costs, staffing, sttucturing finance, etc. Basically, management. But, yes clearly, you need to broadly understand the market, and factors dominating drinks and tech will likely be very different. But no company the size of Coca Cola, MS, Ford, etc, has one man making all the decisions and, like any good army, a superb general staff is necessary. So presumably, MS has board-level technical people, board-level marketing people, and so on for finance, probably personnel, etc. And, reading between the lines, His Gatesness is going back to provide some sort of technical vision, and he didn't do so bad last time round.
As for the balance between desktop and cloud, it seems self-evident to me that, at the very least, that's the direction MS has been going. The vision, quite possibly correctly, is that the desktop market is, if not at saturation point, then close to it, and that more portable-device-oriented markets are where a lot of the growth will be.
My view, personally, is that while there is a fair degree of overlap between desktop and mobile devices, and clearly, mobile devices are better at some functions previously the exclusive preserve of desktops, not least because technology didn't allow for sufficiently portable AND powerful mobile devices, that bridge is clearly crossed.
I think MS would be stupid to rest on their desktop laurels. IBM did that, which is how MS got to be such a success. MS would have been still-born as a force had IBM seen the future as Gates did. MS won't want to repeat that piece of tunnel vision.
BUT ..... there are ways to do it.
One way is to take existing users with you. That is, by all means enable MUI in W8. But DO NOT try to strong-arm users into it. You can lead a pig to an obstacle course, but if you try to make him jump it, you're going to end up with one very angry pig.
The other way is to be dictatorial, and try to pretend that the UI ethos that, at least for argument's sake, works well for phones and tablets is also the ONLY ethos for desktops, when it self-evidently is not.
It's rather akin to a large pig farmer buying half a dozen cattle, and telling the pigs they've now not to pretend they're and graze in a field.
Ever tried milking a pig? Many of whom are male? A good way to annoy the pigs, especially the latter group, and not a great business model. Instead, by all means start raising cattle, but as cattle, and yet respect that pigs are pigs.
Hopefully, MS' s new boss isn't blinkered in a cloud-centric viewpoint. Hopefully. Not holding my breath, though.