When Mark Zuckerberg calls for stronger regulations around privacy, what he's doing is calling for the government to solidify his monopoly status. By exerting very high compliance costs on younger more agile competitors, he ensures that only Facebook and a select group of deep-pocketed competitors can compete. And that ensures his dominance for even longer.
When a billionaire openly calls for regulation, you should be extremely suspicious. Regulatory capture is often the intent and goal.