A company I worked for in the past explicitly made the mobile web version worse so people would use the app. They did it because with the app they could send offers through push notifications. Ugh.
It also is more likely when to users to come back after stopping using the app for a while if it's still installed and as such they can "stumble" about it.
Anyway the most well known example is probably YT which slowly reduced over time the functionality of their Web version for mobile, and also put things in to make it more annoying, too.
I don't know why so many people leave so many notifications active. I've even had people tell me that lack of notifications are the reason they don't like just using web sites on mobile.
