Why are you ignoring the whole purpose of this case? Apple has created an anti-competitive environment that allows them to dictate terms by controlling app distribution on its devices. If there were alternative ways to distribute apps on an iOS device, we wouldn't be having this discussion.
I’m not opining on the merits of the case, just on who needs who more.
For the record, I think transparency (in general) is always good, and so any terms and conditions that restrict price transparency are inherently bad for society.