andoid and ios basically have the flaw of having a centralized location for downloads, and is subject to those rules because its centralized and the majority use it.
cant treat it that way on computers as much because how people install programs on computers are completely different than on mobile (more likely downloading it through web, or a different client on the web to download something, linux users are usually more technically inclined to hop distros or add their own download repositories if they didnt want to download software in their main native storefront)