"The Birth & Death of JavaScript"[0] talked about this. From my memory, in "the future" described in the talk, everything is ported to JS so that the VM does t

"The Birth & Death of JavaScript"[0] talked about this. From my memory, in "the future" described in the talk, everything is ported to JS so that the VM does the isolation automatically and all the overhead can be thrown away. [0] https://www.destroyallsoftware.com/talks/the-birth-and-death-of-javascript https://www.destroyallsoftware.com/talks/the-birth-and-death...