Are you not convinced that Google Search, DDG, Gmail, Facebook, WhatsApp, Snapchat are all "good" products in the eye of many people? As far as I can tell, all of those products are paid for by sponsors.
These platforms have been coasting on network effects alone for years. The "I'd quit but I have no other way to stay in touch with (friends/family/whoever)." / "but all my (whoever) are on it" justifications you constantly see from people are evidence to support that.