With 2 billion DAUs and 3 billion MAUs, the company’s user base has leveled out across Facebook, Instagram, Messenger, and WhatsApp. For the past decade, those user bases have consistently grown by 5-to-10% annually. Never again. Absolutely everyone who wants a Facebook account already has one. Some users are even migrating away from established platforms to newer ones like TikTok, Snap (SNAP)…