Comparing an iPhone to a Mac is a false comparison.

Mac is a development machine for some and I want to do things on it that I do NOT want to do on my phone.

Also, my phone is more important than my Mac. It has most of my personal info and I can call emergency services and others can call me during an emergency.

So I really like Apple's thinking on this. Lock down the phone but give enough controls on the Mac to enable development.