The problem isn't with the OSes -- it's the legacy software. There's just too much of it written against fixed DPI targets. Apple's pixel doubling (HiDPI) is a

The problem isn't with the OSes -- it's the legacy software. There's just too much of it written against fixed DPI targets. Apple's pixel doubling (HiDPI) is a hack to get some of the benefit of high density screens without going to full resolution independence. It works really well, in my experience.