even possible with a some of them, but even in that case they're usually not "refunding" as much as they're just "making a new transaction for the same anount the other way" which does the same at the surface until reversals, voids or rejections happen and it all becomes a mess.
...Apple makes revenue on the devices? On any monthly subscriptions you take with them? On the developers paying for licenses?
And let's not act as if people would use iOS if they couldn't have their apps. It is so much of a net gain to Apple to allow people to develop their apps there's a good chance it's indirectly profitable without any direct revenue from IAP's.
other people being able to choose wether something is "hey this might be relevant to you" level vs "Hey, this needs your attention now" is something i actually like, given how right now MSTeams just has an @ that it always treats with the same level of urgency.
either way, you can just turn off desktop notifications.