Some books like to use a rule to keep bonus monies issued to players even if the player meets all rollover requirements.
The rule is simply "We reserve the right to revoke bonuses on professional players".
I think it is more like a way to keep the bonuses of winners. If I deposit 10 dimes today and get 20%, there is a chance I will win money and satisfy rollover rules. Just because I win does not mean I am a professional player.
And there is always the catch all "These bonuses and incentives are subject to change without notice."
C'mon Sportsbooks. If you do not want the winners atleast do them right and pay them in full & then boot or reduce limits.
By stating they are steam chasers, professionals, or somehow abusing your bonus because they win & stealing their money is an unethical approach.
I am all for loyalty to the books from players, but I cannot see not paying a player just because you assume he/she is a professional because they happen to win.
You tease them in with a nice bonus and then do not want to pay if they win.
If you want to play, then be willing to pay.