No thanks. Keep iPhones in their walled gardens where they are safe. Androids exist for experimentation.
That's fine too, don't strong arm me out of 30% while letting others get away with no paying that. Some people want a walled garden (you) and dont mind paying for it, others would like to install software of their choosing without letting Apple know what they install and by who.
Apple is not a monopoly, so I feel their attitude here is fair.
Believe me, the rules do make sense.
> “Application” means one or more software programs (including extensions, media, and Libraries that are enclosed in a single software bundle) developed by You in compliance with the Documentation and the Program Requirements, for distribution under Your own trademark or brand, and for specific use with an Apple-branded product running iOS, watchOS, tvOS, or macOS, as applicable, including bug fixes, updates, upgrades, modifications, enhancements, supplements to, revisions, new releases and new versions of such software programs.
> “Provisioning Profiles” means the files (including applicable entitlements or other identifiers) that are provided by Apple for use by You in connection with Your Application development and testing, and limited distribution of Your Applications for use on Registered Devices and/or on Authorized Test Units.
However in practice, for example, I use the Apple Developer Program with Cydia Impactor to build and install apps like Spike and xDrip on my kids iPhones (they are both T1D). It's basically point and click. [1]
[1] - https://spike-app.com/install-spike-using-cydia-impactor/