There was a time, around 20 years ago, when Microsoft had around 90 percent market share in the computing market and other companies, most notably Apple, were fighting for relevance.
Follow up:A lot has changed since then. It began with the reemergence of Apple in the late 1990s and things really started changing when the first iPhone was released in 2007. Within a couple of years, hundreds of millions of new computing devices were sold and Microsoft lost its dominant market position.
Now it seems there's a new sheriff in town and it's Android. According to Gartner's forecast, Google's open operating system Android will be installed on almost 50 percent of all connected devices shipped this year. That includes PCs, mobile phones, tablets and the so called hypermobiles, a new category of devices that consists of tablet/PC hybrids and cloud-based laptops such as Google's Chromebook.
You will find more statistics at Statista