Time. Small things that add up to big savings of time every day. My watch unlocks my MBP when I walk up to it. Maybe I am typing a note with the mbp, drawing a diagram with my iPad, taking a snapshot of a whiteboard with my iPhone, all of that simultaneously into the same note file—zero consolidation needed later on. I have set up productivity shortcuts that work on all my devices doing the same thing but in an appropriate manner/UX for the specific device. I can manage text messages from whichever device is in my hands at any given moment. My AirPods Pro2s magically shift to whichever device has my focus at the moment. My iPad can act as a second monitor to my MBP, or simply share the keyboard/mouse. I connect to a WiFi on one device, all of them know that password and can connect as well with merely a click. I can upgrade a device, login with the same ID, and lay it down and within moments it’s configured with all my preferences and is ready to go. There are probably another half dozen to a dozen things that I do daily that are seamlessly integrated just because of the ecosystem itself. They are basically working together so well that I don’t even notice the integration anymore. I have 5 different devices that feel like one.

Could I do all these things with other manufacturers…probably. However, all these things I can do with Apple by just logging in to my devices with an Apple ID. I don’t know of any other solution or combination of hardware/software that provides that level of out of the box ecosystem just off a single login.