If your players in this hypothetical are Apple, NSO, Israel, and USG—each could probably have a pretty convincing list of arguments for and against. I could see it going either way.
For a more public facing version of this from the CIA, look at their unofficial Venture Capital wing: https://www.iqt.org/about-iqt/
You must remember the US' interest in spying and conquest is a rather unique trait. Most countries don't go looking for trouble worldwide.
That's interesting. Why do you think that?
They are already able to spy on their phone users if ordered by the right three letter agency, they don't need NSO/Pegasus for that.
And if they still do so, it would basically be official: "look a phone vendor that develop tools to spy on phone usage". Not a good marketing either.