I know it's not exactly the same because these tools are for internal use and never see the public, but react native works well while keeping the maintainence at a minimum. I'm not in on the ops site of device control, but our IT installs the APK packages directly through the enterprise control they have, so we don't have to deal with Apple or Google. So I agree with you completely on that part, but cross platform maintainence isn't as hard as it used to be if your toolsets support it.
I did maintain the Apple account for a previous place where I worked though, and holy hell that sucks. Not so much the day to day work, but being from the Scotish part of Denmark, it hurt my soul to pay them money (it wasn't even mine) to use their platform. Not sure if Google is as shit, never tried their store from the developer side.