I honestly think the "gnu/linux operating system" model is in its final phase of life.

Kernel ABI stability has brought forth options like running docker containers on FreeBSD and Solaris/Illumos/SmartOS Standardised workflows around "containers" are breaking down the need to care what your container is on the inside. Imagine running statically compiled Go binaries that have been compiled against s CloudABI tool chain deployed to CloudABI native hosting with maximum flexibility.

I've got a notebook full of details about "Linux compatible" system designs. Throwing away the Linux kernel for fun and profit! It's closer than you think.