>Why is the lack of an app on the App Store or Play such a major hindrance?

Would an alarm clock on browser be more easy to use, ergonomic and more private in a web page ?

I was reflecting on the issue with music steaming giants, so I had the idea to have the musicians form a cooperative and create their own service where all the money goes to the creators. The first issue I see is Apple and Google will not allow your app in the Store without paying them a big tax and using web page for music steaming would for sure use a lot more battery and it will not have access to the nice native APIs so good luck competing with the giants.