It looks like you you may be interested in Qubes OS, security oriented operating system relying on strong, hardware-assisted virtualization: https://qubes-os.org. My daily driver, can't recommend it enough.
I know about it, but I'm not interested in QubeOS approach. It's VMs all the way down, while what I'm talking about is no VMs and capabilities as first class citizens and no vurtualization.
I know about it, but I'm not interested in QubeOS approach. It's VMs all the way down, while what I'm talking about is no VMs and capabilities as first class citizens and no vurtualization.