Once iOS has the ability to sign its own apps, the sky is the limit. In fact, we're getting pretty close to this even without Apple's help. UTM can boot Windows

Once iOS has the ability to sign its own apps, the sky is the limit. In fact, we're getting pretty close to this even without Apple's help. UTM can boot Windows 10 using a whacky JIT hack to get QEMU's TCG working for (slow) x86 emulation. It won't be long until someone boots Xcode and compiles a simple app (though it would probably take hours!). https://github.com/utmapp/UTM https://github.com/utmapp/UTM. On the other hand, many smart people have started to port other languages, such as porting the Python interpreter (https://github.com/holzschu/python3_ios https://github.com/holzschu/python3_ios) and C compilers (https://github.com/ColdGrub1384/SeeLess https://github.com/ColdGrub1384/SeeLess). See the LibTerm project (https://github.com/ColdGrub1384/LibTerm https://github.com/ColdGrub1384/LibTerm). I can already see someone creating a sandboxed mini-OS with the ability to spawn and manage processes just like a Linux terminal by cheating iOS's Thread API. However, your forum post says you believe Apple wants to take the power of the ability to locally compile and sign away from developers. This is unlikely for a number of reasons, one of which is completely breaking all games built using non-SceneKit workflows (basically all of them) along with other apps that depend on outside compilers.