I like the optimism of Linux users thinking there will be a massive flood towards their favourite Linux distro.
When the obvious path the majority of gamers will take is just ... not upgrade anything and stay on an unsecure OS until their next major PC upgrade.
Most users don't care about security as long as it allows them to do with their computer what they want.
If Microsoft didn't push people to a new version, you know too many would still be rocking Windows 8.