I believe you should also try to look at the situation from the casino's point of view too. Because from their viewpoint, you're merely farming for the cashback/rakeback rewards and not actually using the site for real gambling. From the point of view of the business owner, you're a leech that's taking revenue out of the business, not someone who brings something into the business. What would you do if you had such a "customer"?
Makes sense. No casino/sportsbook likes long-term winners which is why they usually resort to this stuff to try and keep their business alive. Rollbit actually released all of his funds successfully before banning him which is the most important part.
Sites which confiscate funds and ban winners are basically scams and Rollbit is clearly not one of them.
This is the case where Rollbit released the fund and blocked his account. We have seen another case where the user was banned with a couple of thousands of dollars for the same generic "sportsbook abuse". Later a guy from this forum created a thread in reputation board and accused the campaign manager for misusing his forum reputation.
I did not participated in those drama but I guess the case is still open in scam accusation board. My one and simple suggestions to casinos, if you do not allow something, block it. If one user abuse it, you already know how it was abused, why did you keep it open?