As a user, I would like to use a Firefox that is a real Firefox, not some chrome on top of a Safari instance. Similarily, I'd like to develop apps that make use

As a user, I would like to use a Firefox that is a real Firefox, not some chrome on top of a Safari instance. Similarily, I'd like to develop apps that make use of NFC without paying apple a 100$ a year. As a user, I'd like to use JIT compilers in emulators. Maybe I'd like to run a Linux VM on an iPad Pro, we know full well the chipset supports this wonderfully. As far as safety is concerned, memory safe JITs are a thing. If they're worried about secret APIs, an ACL can be enforced in many different ways. If they're worried about syscalls, apps with JITs in them can be sandboxed.