This is probably a question for an affiliate manager, since they know this business from the other side.
It is a very tough question, for sure.
What programs still give affiliate negative carry-over?
As an aside (off the topic) – you know those players who win big, then don’t return? It occurs to me that, if a player wins tens of thousands and our accounts are set to zero…..then the player returns the next month to lose it all back, that gives the casino a double whammy – paying out a big win twice (once to the player, and again to the affiliate in commissions). That may very well be why some of these players vanish.