The thing that killed Parler this week was when Amazon said it will no longer host the service and Parler couldn't find anywhere else to go. Everyone is arguing about whether that story is about big tech suppressing speech, but really I just see it as a simple antitrust issue. AWS dominates the market for server space to such an extent, it is often one of the only options if you have a service that requires storing a large amount of data.
If people started talking about what happened to Parler as an antitrust problem, maybe some of these conservative whack-jobs would start caring about antitrust enforcement.