The latest operating system marketshare data from NetMarketShare reveals Windows 10 now accounts for about 5 percent of the desktop market. As ARS Technica points out This is a very fast adoption rate, Windows 7 took a couple of months to hit the same level of usage and in case of Windows 8 it took about 6 months.
Of course, we should expect Windows 10's uptake to be different to that of its predecessors, because Windows 10's price is different to its predecessors. Virtually none of those 75 million Windows 10 users are likely to have paid a penny for the update. For Windows 7 and 8 Home and Pro users, the upgrade is free until the end of July next year. For corporate customers with active Software Assurance agreements, the latest version of the operating system is always available at no additional charge.
Over the next couple of months, Windows 10's marketshare should soar as there are still plenty of systems waiting for the Windows 10 update.
The data from StatCounter shows a somewhat higher marketshare for Windows 10, their stats reveal Windows 10 owns 6.75 percent of the market, up from 4.76 percent a couple of weeks ago.