Why does Microsoft insist on monolithic updates, where other OSs update small components? I have had the situation when the update was downloading for a long t

Why does Microsoft insist on monolithic updates, where other OSs update small components? I have had the situation when the update was downloading for a long time then indicated that it had failed, wasting all the data that was already downloaded, probably around three quarters of a gigabyte. On the other hand, I have an OS that updates individual apps and individual libraries. If something fails along the way, at least I have updated most of what was downloaded, leading to little wasted data.