The market for mobile web products is less a megamall of hundreds of shops than it is two supermarkets sitting on opposite sides of a suburban street. Holding the keys to those supermarkets are two companies: Apple Inc. and Alphabet Inc.’s Google. Should one of them decide not to stock your product, there’s little that you can do persuade them otherwise.
Source: Spotify’s Apple Dispute Reveals Uneasy Dependence on App Stores – Bloomberg