Nowadays all the big software giants are trying to create a sense of continuously available service picking up from where you left off, on whichever device you are on. This is a really nice feature which only those companies can implement, where they have that wide range of devices that are everywhere.
I see only two companies who can truly pull it off. One is Apple, which has gained so much penetration into the household that it's not surprising you find houses sticking to only Apple for all the devices required, like phone, pad, TV, iPod, desktop, laptop, homekit.
Although I think Windows can really make a dent in that field, like sort of like an underdog. Windows is widely used, and recently with the release of Windows 10 moulded the OS into something which without changing much works in all types of devices.
Windows has the surface table, which is awesome. I always dreamed of making a media server for the living room. Phones are really good, except for a lack of apps. Great tablets, like the surface pro. If they can pull off a continuum feature between all the devices, along with a homekit style device to control other parts of the house, it would be awesome. They also need to provide auxiliary services like media server, epg, storage, over the wifi sharing privately without uploading or downloading from Microsoft servers, internet storage for sharing documents or media if need be and other things.
They need to make it effortless to make this move to such a connected life. Apple has really nailed this part of the equation, that's one of the main reason people mindlessly but Apple's overpriced products, because people want to benefit from it without much friction within the first few moments. Windows has a lot to learn from that.
I bet that once Windows overcomes all those barriers, makes upgrades cheap or even free, release a few products like TVs and other household items like the Surface Pro hybrid laptop and gives the option to minutely manage privacy to the liking of the privacy minded user, they can easily out smart the Fruit.