I’ve become convinced that complex things in tech either ossify and get stuff built on top of them, or get Ship of Theseus’d. It’s extremely rare for an outright replacement to replace something overnight. Linux is not going to be suddenly replaced by something incompatible, but I’m concinved it will become more oxidized over time. If not under Linus, then under an initially fully compatible corporate fork which would ultimately become more popular. So there’s some pressure on Linus to move it along .