A settlement, meaning a legal agreement to resolve claims without going to trial, worth $18 billion has placed Meta at the center of a children's online safety dispute. The company has since called on rivals including TikTok and YouTube to match its commitments. One business professor told CNBC that Meta is seeking to ensure its competitors will face the same rules.

The short version: a major legal dispute ended, and Meta turned that ending into a public demand.

Settlements usually close a chapter. They bind the parties involved and carry no automatic obligation for anyone outside that agreement. Meta's decision to call out TikTok and YouTube by name after resolving its own dispute steps outside that norm, using a concluded legal matter to apply pressure on the wider industry.

The professor's argument, as reported to CNBC, is direct. Meta reached a settlement over child safety online. Now it wants platforms of similar scale to operate under equivalent obligations. The $18 billion figure is the number it is bringing to that argument.