I'm just waiting for the day when Microsoft moves on to subscription based service. Basically I'm assuming that they want their win10 user base high enough and then one day they say "we changed our licensing policy to subscription based" and then everyone has no choice but to pay $20 or whatever every month or be locked out from their machines. There's probably some small print in the win10 EULA that conveniently allows them to move onto this model under the ruse of "rolling releases"