Apple never said they were switching the iPhone to USB-C, unless I missed something. Do you have a source for that?
We need regulators to do this so Apple doesn't change their mind and make "Lightning 2". Even if Apple did have a full USB-C switch on their roadmap, every company in FAANG needs a healthy fear of regulators. Europe cracking down on the App Store and Apple's silly proprietary cables are the start of this, and a fantastic first turnout so far.