Not if he was never eligible to receive it in the first place. In that case the net winnings are zero. I already said it would be more ideal if the system flushed out multi-accounters before they placed their bets, but nobody does that.
In short, you are elegible to deposit and lose, then no matter if ToS are being violated, however, once it is time to withdraw, alarms ring and everything is checked to the smallest detail.
Really reasonable.