How does Facebook generate revenue?

2. What are your thoughts on the various crises encountered by Facebook, including Cambridge Analytica, the 2018 data breach, and the rampant sharing of hate speech and misinformation on Facebook's platform?

3. Is Facebook's business model to blame for such transgressions? Or, is the business model ethical, and the crises are merely a result of poor execution?

4. In the United States, there is essentially no regulation of social media or tech companies - can large corporations behave ethically without external regulation?

I need answers with good explanation almost two page long please