You're technically correct, and I have actually installed things like AltStore on my iPad in the past. However, I suspect those things exist moreso because App

You're technically correct, and I have actually installed things like AltStore on my iPad in the past. However, I suspect those things exist moreso because Apple would find it too onerous to destroy them. In fact, the JIT compiler thing requires having an active debugger connection from another machine. But they could and would change if they were pressured to: say, by Epic Games deciding to release a Fortnite IPA for sideloading via AltStore. They would absolutely either end free dev certs or ban people who provision other people's code. "No sideloading" is policy, not capability. If Apple feels like their policy is being violated, they will shrink capability to match.