* other companies/entities that can be considered "competitors" (Twitter, TikTok, LinkedIn, etc)
* the acquisitions in question (Instagram and WhatsApp) being approved by the suing entity (namely, the FTC) themselves back in the day
I wouldn't be surprised if an outcome of this were to be say, limits against cross-linking acquisitions together or the like in the future. However, having existing companies be forced to be spun out in their entirely... I have a hard time imagining that being the outcome, given the chilling effect it could have on the rest of the industry.