This is pretty much in the past. It was very difficult and took years to perfect. But by now with Windows Ten and even before, Microsoft is ultra coordinated with the major computer manufacturers as far as the OS working seamlessly with the hardware. If Apple is at 100% due to being hardware and OS supplier, then modem MS Windows computers made by Dell, HP, Acer, Asus etc. are at 95% or higher. This had to be done or they would all die, especially with the smart fone onslaught. Windows Ten is almost a zero cost commodity. You can buy Win Ten keys for a few bucks on ebay (gotta do an ebay international search) for a build your own. I have done this.
Steve Jobs approach saved AAPL all that difficulty and made the money to finance the initial development of the iPhone.