"by unifying the OS running on desktops, laptops, smatrtphones and tablets, Microsoft aggregates the number of devices out running Windows 8 right out of the gate. Windows 7 amassed 350 million licenses in its first 18 months. This will most likely put Microsoft on competitive footing with Apple and Google from a platform standpoint. Apple has about 187 million iOS devices running on that platform (as of March 2011). Google recently surpassed 100 million Android devices, with that number is growing by about 400,000 devices daily." - LANjackal

"Windows 7 amassed 350 million licenses in its first 18 months. This will most likely put Microsoft on competitive footing with Apple and Google from a platform standpoint" - 80% of that 350 million (280 million) are used by business as typewriters and adding machines. - Zato Gibson