I have already seen a lot of sites and some casinos that become a scam, while they could have made a lot more money if they would stay open and be legit. Somtimes, they just want some quick money. Has happened before and will continue to happen.
This is true. I don't think Roobet will scam anyone, but we can never tell for sure due to various reasons. Look at sites like Ftx, Betnomi etc which seemed perfectly fine one moment and suddenly scammed many in the blink of an eye.
This is why you should never leave your funds on any site regardless of its reputation unless the amount involved is small.