Future scope of Linux based on today's operating system usage pattern

If I see the current usage of different operating systems, there is scope of Linux OS in next 2-3 years to expand from its present user base of 5%. Simply put, significant volume of users are still using Windows XP even after the support for it has ended. Currently the app providers are supporting XP but within 2 years or so that support would be minimal. Further, a significant chunk of that