If you read Casinomeister, player checks have been bouncing and were discontinued for that reason.
the thing is … they can’t just set up one account and expect to use it month after month. Its not going to be that easy.
much like the time when some casinos could still accept credit cards and others couldn’t .. it was because those that could were continually setting up new accounts with different coding and they stayed ahead of the game by jumping before they got caught in one place.
the same is going to be necessary to send checks. the cost of doing biz in places where this is an issue.