you are playing on the software provider's servers directly through Betcoin or another online casino. The operator, Betcoin has no access to the games and cannot change them in anyway. Equally, when you are playing a progressive or jackpot, the casino software provider pays these wins out because it is based on the players of all online casinos using their games.
You have the opportunity to remove the games from your website if the software provider is engaging in less then fair (to say it nicely) business practices. You know very well that a player that
you sent to BetSoft should have won a jackpot but ended up receiving a fraction of what he should have received. You are responsible if you send a player to a certain software provider's "server", the player wins, but the software provider does not payout.
By sending players to a software provider that you know acts unfairly to players, you yourself are acting unfairly to players, and you are whoring out whatever reputation you have left in exchange for payment from the software provider that you receive.