ChromeOS isn't an open platform and Chromebooks are dangerously locked down.
Microsoft could solve these issues on windows by forbidding software that they don't approve. It would undoubtedly improve the security of the platform. But it turns Windows into a walled garden instead of an open platform (consider - would Microsoft have allowed Firefox onto the platform? unlikely)
Microsoft could solve these issues on windows by forbidding software that they don't approve. It would undoubtedly improve the security of the platform. But it turns Windows into a walled garden instead of an open platform (consider - would Microsoft have allowed Firefox onto the platform? unlikely)