1. Takes money from the scammer
2. Tells the scammer how to target people
3. Serves the scam to the consumer, ensuring they see it
4. Takes a cut of the action when the scam is successful
5. Tells the scammer how to optimize their campaign
6. Continues working with scammers after they're reported
The scammer has a fairly small part in the overall operation. The platform is doing almost all of the actual work perpetrating the scam. They're not remotely innocent here.