Ever fired your highest-paying client just to save your sanity?

We had a whale client who paid us more than anyone else but they sucked up almost all of our support bandwidth with constant custom demands and emergency calls.

Dropping them felt terrifying because of the revenue hit but it instantly freed up the team to actually fix our core product bugs. Three months later our churn dropped because the rest of the users finally got a stable app.

Have you ever walked away from a "best" customer and did your revenue actually recover?