Consistently delivering high quality software features is impossible. Even great teams mess up every once in a while. The way apple used to get around that was

Consistently delivering high quality software features is impossible. Even great teams mess up every once in a while. The way apple used to get around that was to throw things away, or to send them back to the drawing board. There was someone at the top who detected when things weren't ready, and prevented them from getting released or dared teams to do better, even at great cost. In the jobs era there were many things which were rumored to ship and cut at the last moment. Apple has stopped not shipping things, and it's what will turn them into just another software company.