Let's put an analogy to Google ads - the ads that appear at search results do not make up even 5% of their ad revenue. Even smaller for Meta. They earn their big ad revenues from their network, not from their main apps.
Every source I know (hard to link on mobile) shows Google Search to make up 50+% of their ad revenue, and there has been extensive reporting over the years on Google's struggle to diversify away from that.
Every source I know (hard to link on mobile) shows Google Search to make up 50+% of their ad revenue, and there has been extensive reporting over the years on Google's struggle to diversify away from that.