This comment seems to imply Omegle had no moderation, and that is false.
https://www.omegle.com/
> I believe in a responsibility to be a “good Samaritan”, and to implement reasonable measures to fight crime and other misuse. That is exactly what Omegle did. In addition to the basic safety feature of anonymity, there was a great deal of moderation behind the scenes, including state-of-the-art AI operating in concert with a wonderful team of human moderators. Omegle punched above its weight in content moderation, and I’m proud of what we accomplished.
> Omegle’s moderation even had a positive impact beyond the site. Omegle worked with law enforcement agencies, and the National Center for Missing and Exploited Children, to help put evildoers in prison where they belong. There are “people” rotting behind bars right now thanks in part to evidence that Omegle proactively collected against them, and tipped the authorities off to.
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The real reason, of course, is that Facebook can afford an army of lawyers, but Omegle can't.