You can see further community norms in software breaking down. There are already semi-ads in Ubuntu's MOTD.
Few days ago I did `npm install` on a project and saw literal ads spamming my console, asking to maybe support some library's author on Patreon and notifying me (a dozen times) that said author "is looking for a good job".
Apple has no problems with regularly spamming me with notifications to use iCloud, upgrade to new macOS or to use AppStore features. It's coming there too.
I use a macbook, an iphone and an ipad - I get notified about the the MacOS update about once a year or whenever it comes out. I've never seen the other notifications that you mentioned.