Users in general don't upgrade unless forced, because non-technical folks are conservative. All of Microsoft's competition have encouraged (free) updates in one

Users in general don't upgrade unless forced, because non-technical folks are conservative. All of Microsoft's competition have encouraged (free) updates in one way or another, with much less regard towards backwards compatibility. This also creates expectations for developers, assuming that a majority will upgrade in a timely manner, therefore users feel compelled to upgrade otherwise their favorite apps may stop being supported for their current OS. Microsoft's biggest enemy is the old Microsoft that took years to update Windows XP and IExplorer 6. And then Vista happened, which brought no improvements, except a flawed and annoying security model, bloat and instability. And do I even need to rant on 8.0? So it's no wonder that users lost their appetite for updates. However, I believe there is serious room for improvement in how we use our computers, especially our PCs. However that line on a single OS for all devices doesn't sound good to me, because there are fundamental differences between the devices in question and I hope that Microsoft will do more than marketing gimmicks and interfaces meant for tablets being shown on large screens that have keyboards.