The expectations are just so absurdly high now, it's the same problem in the browser space (which at this point is there a difference between OS and browser).

The expectations are just so absurdly high now, it's the same problem in the browser space (which at this point is there a difference between OS and browser). There isn't a lack of attempts though, there are many tiny OS out in the wild (believe there are like a dozen alone written in Rust) to play around with but many have had to dial back their ambition purely based on hardware support alone.