I do my best to support the uplink/downlink engineers as they are usually in a position to greatly influence decision makers!
Elsewhere it is used for theft of service and you often see the BISS keys shared in forums and private lists. North America use is primarily legit. Don't think I have ever observed the sharing of private event BISS keys, but I am sure it happens.
I do remember a major Hollywood studio used to screen upcoming movies with BISS encryption. That was too tempting of a target and they transitioned to another method when they learned that it had been compromised.