You don't think that Apple OS X has virtualization? Sorry to disabuse you of that mistake, but I run EIGHT different OSes on my UNIX™ based OS X Mac. . . now including Windows 10, 8.1, 7, XP, a couple of Linux installs, UNIX™, and OS X, and I have occasionally, run them all simultaneously in sandboxed protected windows under OS X.
What "walled garden" are you blithering about? Ignorance of the Mac platform is bliss, isn't it, because you can post such twaddle and think you know everything.
No, you will not see "Windows10 on iOS" because Apple will not permit it. . . however, they will be allowing Microsoft Cortana on iOS as a service app. Neither will Apple be allowing "iOS on Windows10" because Apple is not selling their operating systems.
Perhaps you like the Russian Roulette of wide open, free for all, of open source accessibility in a mobile device such as Android, which has resulted in 98% of all malware on that platform and where 25% of the apps in the app stores is infected spyware and adware.
Spyware and Adware apps (let’s call them ad supported apps) can be found in Google Play – some of it is condoned – in return for free services - collecting information about you, your usage habits etc., in return for playing a game.The issue is that it may take some time to identify that you are infected – and by then it may have stolen your ID, passwords, sent out SMS or email and made your life miserable. The cure is a factory reset, change all your passwords (on the device and at the bank etc.) and carefully reinstall your apps – avoiding the dodgy ones.— Is Android a Malware Magnet?—by Ray Shaw—ITWire—April 2, 2015
Apple does not condone that behavior in Apps. Ads are OK for ad supported freeware, but NOT data-mining. Such behavior will get the developer a lifetime ban from Apple development and the pulling of all of his apps, including any paid apps, regardless of how lucrative those apps may be for Apple. Three years ago Apple pulled Camera+, the best selling app at the time, along with the developers entire suite of iPhone apps, because the developer stuck a backdoor into a free app that allowed some disallowed behavior. That pulled paid App was netting Apple over $3 million a month, not to mention the millions the developer was making on his 70%. The drastic penalties combines with aggressive curation prevent any attempts at getting such malware into apps.
Third party Android App stores have as much as 70% infected apps. There is a REASON for the mobile devices in Apple's ecosystem to be in a secure enclave. Android's ecosystem is a sieve.
OS X may have virtualization but I have yet to see where iOS supports virtualization.
Everyone knows Apple is a walled-garden. Geesh. That does benefit them on many fronts (controlled access) but it is also a detriment.
There is already cross-porting of apps from iOS to Windows 10 and visa versa. Will this disintermediate the OS? Suspect it will, similar to Android apps on Blackberry 10.
Looking forward to Android and iOS apps running in a VM on QNX. Still run BB World productivitiy apps while providing a isolated VM for the toys of the world.