Two good friends were running a sketchy Instagram business back in the day. They had a massive churn issue around 3 months. They knew this was a cash cow that

Two good friends were running a sketchy Instagram business back in the day. They had a massive churn issue around 3 months. They knew this was a cash cow that was printing money but someday it'd come to a end abruptly. I suggested to them to offer 20% to their existing customers to switch to annual. They made ~$60k in a day and knew they'd have to refund if things went south before the annual contract ended. They were able to deploy the capital into marketing and explode. In the end they had to shutdown but not before each founder had taken home +$250k and invested into legitimate means.