Forcing Windows 10 down your throat is a reaction to the phenomenon of Windows XP, where they just couldn't make it die. I'm sure they decided to never let that

Forcing Windows 10 down your throat is a reaction to the phenomenon of Windows XP, where they just couldn't make it die. I'm sure they decided to never let that happen again. It reduces the cost of supporting old customers, while simultaneously ensuring they have a solid base for new products that depend on new infrastructure.