There are other app stores on Android, e.g. OEM ones like the Galaxy store. The latter doesn't really compete on price though - 20% cut of one time payments and 15% of subscriptions. I think the Android app stores anchor to the iOS app store prices to piggy back on Apple's monopoly power - devs are used to having to pay Apple that much, so they will not resist if you charge the same.
> they will not resist if you charge the same.
Sure, but they also won't generally bother if the fees are the same as the installed-on-every-device Play Store
All of the alternative stores are systematically disadvantaged time and time again due to Google's and Apple's near-absokute control over their respective OS. They are as anti-competitive as they are allowed to be. And the US seems incapable or unwilling to rein them in.