@gaula92 - It's evident that you have no idea what life is like in the business world.
The company I work for has over 15,000 computer users worldwide, ALL using Microsoft products. In spite of what you may think, most work is not done on tablets or smart phones, but by people sitting at desks using laptops or desktop machines. The business world has no intent of ever moving to an underpowered Android device or an overpriced Apple product. Thank goodness the majority of IT departments are run by intelligent managers, not by fan boys like yourself.
The ONLY contender for a business O/S besides Windows is, of course Linux, however I don't see much movement in that direction. The Linux business model is not what most companies are looking for in selecting an operating system, It's unfortunate, but true.
Whether you like it or not, Microsoft will be around for many years to come.
All true. But don't let reality get in the way of tall poppy stories. Microsoft is the only company with a serious joined up integrated business product model. Oracle are a disjointed basket case, IBM truly black, and Open Source puts you at the mercy of recalcitrant admins and zealots that don't understand what enterprise architecture actually means; AKA my way or the highway. The complexity and cost of integration and the resources required to do it (badly) blows it out of the race.
IMO there is no competition. If MS are doing so badly in sales where is all their money coming from? The company I work for has 25k + Windows Desktops and I estimate over 1000 Windows servers and 200-300 Linux & Unix(solaris). Both physical and virtual.