Comment by pclmulqdq

I think it is possible that the company posting this didn't realize that this might be the issue, but you are right that they may know. It may have been a small company, even doing that much bandwidth. Online gambling sites tend to push an entire video game when you are playing on their site.

Many gambling companies are fine just doing BYOIP or running dedicated hosting infrastructure that is on providers who are explicitly running hosting for that industry (although they are moving to cloud). There is a good reason this separate infrastructure exists. In general, I would not assume they are rotating IPs: this is not a scam, it's a business, and they are largely fine with being blocked in places where they can't legally operate.