It's funny, I saw and retweeted this while writing this post: https://twitter.com/samwhoo/status/1650572915770036225?s=20

Not sure the future you describe is where we'll end up, haven't given it a huge amount of thought. Would be interesting to see, though.

Things like web servers could probably get away with doing some sort of arena allocation per request (I'd be surprised if some don't already do this).