Thats the risk the casino / program takes by giving CPA deals.
To require players to lose before you can get paid is NOT a CPA deal at all! I agree with BJinfo – what happens when a player deposits $50 and wins? You as an affiliate have fulfilled your obligation to refer a player, but under this particular program you would not be entitled to your payment.
Are you saying it’s perfectly fine to have programs require that you refer only losers? That’s a horrible deal! The $50 is extremely low, and on top of that your acquisition has to be a loser or you don’t get paid? Lose / Lose situation for the affiliate and a win/win for the program … RUN RUN RUN