I don't have time to reply to all your points in detail, so I apologize, but there are a couple I wanted to respond to:
1. The backtracking with Xbox One was a mistake. They could have just explained the system better, but otherwise it was great. Getting rid of physical
media and introducing digital sharing, and online rental would have helped the evolution of home entertainment. Now it's just delayed because of a whole bunch of whiny luddites, who otherwise surrender their software libraries to companies, were too retarded to understand what Microsoft was trying to do.
2. Microsoft can deliver. The mobile OS is just fine. The issue is that a partnership like they had isn't good enough for seamless integration. For these devices to truly excel the hardware and software must be designed in conjunction. This is nothing like the Zune. The Zune isn't necessary for company survival, mobile is. The evolution of their products completely depends on mobile support, device-device integration, and cloud.
3. People don't buy Apple products solely because they're trendy. Some may (just as some people buy Android products because it's trendy to try and be anti-trendy), but many people buy them because they like the integration, and they like the operating systems. I prefer MacOS over Windows very much. I prefer iOS over Android. They're all pretty good, but I couldn't care less about what other people think about what products use. Your entire Apple fanboy argument is just nonsense. There's absolutely no basis for it.
4. The reason that Apple products are successful isn't just because of the OS. It's because of the integration with the hardware. Being able to control both means they create a user experience. Regardless of whether you like it or not, the point is that consumers today want an experience, and/or a product that is enjoyable to use.
For this reason, Google bought Motorola and is releasing Android based phones through them. It's very plain to see. Once the product matures, Motorola phones will be the best Android phone on the market, unless Google surrenders the platform to advertisements and telecom branding.
5. No I'm not kidding. If you pay any attention, you'll see that desktop market is shrinking year after year, and pretty substantial too I might add. If Microsoft simply focuses on delivering to that arena, they will just continue to surrender business to mobile platforms. And for a large portion of "business", a tablet is all they need. So as mobile devices continue to replace desktop devices, Microsoft (without entering the market) just relegates them to what will eventually be a niche. Sure they still have server stuff, but the trend is toward servers, those who operate them, those who need "power" devices, and everybody else having something like a tablet.