The Citizens United decision from 2010 guarantees a corporation's 1st amendment rights, but I wonder if Apple could still use this defense if that decision was overturned.
That has actually been settled law for a long time; it is how newspapers (which are corporations) are able to enjoy freedom of the press--not just the reporters individually.
So Citizens United could be overturned and it would not hurt Apple's case at all.
> Congress shall make no law [...] or abridging the freedom of speech, or of the press
You say they want to grow or maintain their market share. As opposed to wanting to go bankrupt and fire 100,000 people. You mean, Apple wants to continue to exist? That's exactly correct. Rational self-interest is a wonderful thing, including Apple responding to their customer demands.