I only work for CPA because it think that my job is to find the client, the casino job is to make it play. When on Revsahre your income depend on the work of someone else and if he does not do a good job you don’t make money. So if you are on revsahre be sure to work with casino who are able to make player deposit. Also I think that because of the huge competition between casinos, average revenue player tend to go down.
The second point is the contract, if you check the contrat you sign, it can be cancelled anytime with no compensation. So if you bring 1000 clients and then you stop sending new clients for a while it make sense for the casino to cancel your account and stop paying you. And I quite sure more than one will do it.