I don't think Facebook's problem is legitimate advertisers misusing personal information. Rather, it's the spammers, scammers, bots, and foreign spies that dest

I don't think Facebook's problem is legitimate advertisers misusing personal information. Rather, it's the spammers, scammers, bots, and foreign spies that destroy trust in the system. If Facebook could get rid of those (not an easy problem), they could rebuild trust and keep legitimate big-money advertisers happy.