Re: in Sinofsky's defence - is iPad Pro + iPadOS heading towards achieving the Windows 8 vision...?
// The security landscape is getting worse. The app security model for WIN32 and macOS was never designed for such a hostile security landscape. Mobile app models (secure sandbox; limitations; app store; automated updates; etc) are better suited to this.
This is the key point..
Traditional operating systems were designed by and for geeks. They are complex tools that require knowledge and experience to operate correctly.
They are kit cars, whereas an ipad is a ready to drive vehicle. You won't get the same performance or flexibility, but you will be able to drive to work or the shops without any hassle and that's what matters.
Fully featured computers have always been a niche product aimed at specialist use cases and only ended up being used by the masses because actual consumer oriented products were not available yet.