I think that Apple will prevail in this legal fight . Apple is in good terms with this administration. Even when the social media has taken the blame by Congress, it has been google, Facebook and Twitter that have come under fire - but Apple not so much. And currently the US is in a position where how heavy handed the treatment is dependent on your relationship with the administration.
How many companies will look at situations like this and decide not to bother with developing for Apple platforms? I've already stepped back my efforts to support MacOS (I don't target iOS at present). Too many hoops, too much control freakery, and no real comeback if they ever decide that they don't want me to publish on their platform. The balance of power in the relationship is simply skewed too far in favour of them, and a tiny misunderstanding could end my business. These companies have far too much unchecked and unregulated power.