Windows success came from the volume of hardware it has, the fact that you can easily go to a store or online and easily buy Windows based products. The fact that numerous devices ran Windows, the wide array of both of mass market and niche hardware available made Windows successful. Symbian's success came from Nokia's volume, Symbian had significant market share till 2010. Android and iOs came in 2007 and 2008 respectively. Nokia could **** out hundreds of devices per year and they failed to do this with Windows Phone. Likewise Samsung can achieve volume even greater than that of Nokia. Plus Samsung is targeting non saturated markets where smartphone penetration is lower which enables it to reach more people. Samsung has a complete family of devices, developing for Tizen enables an app to reach all of Samsung's products.