The problem is it's not directly in their interest. Fake accounts are just as billable for boosting reach as real accounts. It will only be when companies stop

The problem is it's not directly in their interest. Fake accounts are just as billable for boosting reach as real accounts. It will only be when companies stop advertising that they will be forced fix it. In the meantime they take the money and run. (or invest into business streams with actual long term value)