@libreleah @ariadne the closest to it is like the way Microsoft basically implemented 2 independent systems with completely vietualized and abstracted access in the #XboxOne which is AFAIK still unhacked.
https://infosec.space/@kkarhan/112843688360883031
But their intention in terms of #security is inherently anti-user and would only be acceptable in #CriticalInfrastructure like #Avionics where you'll have to prevent malicious users from ramming a plane into the ground!
As for mass-adopted systems, I'd say that #Android (aka. #toybox + #musl / #Linux + ART) with it's #Java-#VM is the best compromise after hardened Linux-distros, BSDs with #bhyve & #jails and "#KISS-principled" #OpenBSD which all buy security at the expense of control, modablility and portability.