Non-Mac/iOS users generally don't pay for software/don't care enough about polish to pay a little extra for something. That's why the majority of developers develop for iOS first and release on iOS first even though Android has the far larger market share (https://www.cultofmac.com/601492/app-store-google-play-reven...).

The type of person who is willing to pay extra for the polish Mac/iOS has over Windows/Android, is usually also the type of who is going to be willing to spend more for a better app.