My response was directed at a comment that claimed they said, "we are suing Apple because they sued us". In fact, they said "we're suing Apple to help our customers (etc.)!" which is much different.
Your argument is less direct, and it doesn't interest me so much. Yes, by fighting for their self-preservation (if it is at stake) they help consumers by maintaining competition and/or variety.
Without someone to keep Apple in check, the 1984 dystopia would already be upon us.