Well, Apple has a very robust MDM where you can actually turn off certain features. So, I can when and if this happens, turn it off on every device in my family and of course our CTO has already given me the all clear to shut it down on all corporate iOS/iPadOS devices the second it happens before we do our next OS update in the fall.
Corporate employees with devices from the company have already been notified that Third Party App Stores will not be available if the feature ever appears. There was only one guy who complained.