From my own experience getting a medallion stamp, the losing institution doesn't want to make it easier for you to transfer out. The paperwork is often annoying

From my own experience getting a medallion stamp, the losing institution doesn't want to make it easier for you to transfer out. The paperwork is often annoying enough as it is. Certain things "can't be done" online so you have to send in forms and wait. (Always use registered mail, just in case!) If you put enough blockers in place, the customer may just decide to leave the account where it is.