The first party integration is the difference. You won't have your files and photos instantly there when you login and you'll still have to download and setup those apps.
MacOS has idrive and iphoto with all your files in the cloud.
If I walk over to your mac and log in with my appleid, I have all my stuff instantaneously.
I work across a bunch of machines (all macos) and all my stuff syncs across them pretty seamlessly.
Costs way more than chromebooks, though.