I’m not sure whether this actually falls under anti-trust. But you should know they anti-trust laws cover things other than monopolies. I’m sure you weren’t trying to, but switching from anti-trust to monopoly is a pretty common and easy to spot move of the goal-posts.

https://www.ftc.gov/advice-guidance/competition-guidance/gui...

https://www.ftc.gov/enforcement/anticompetitive-practices