You wouldn't want to pay thousand of dollars to pay for an online court to investigate your case and that could potentially become one-sided.
Online court or physical court, only if that casino in question is operational and licensed in your country then you can drag them to legal procedure. When they are not legally binding to your country then your laws may not restrict or punish them in any means. Similarly, in this community also, if a casino decided not to maintain their reputation here then we cannot do anything about their past scams and for future we can suggest this community to avoid them completely.
This forum has been very effective for resolving cases of scams or fraud. If the gambling website has a bad reputation in this community, most probably it won't come out as most recommended gambling site for everyone.
I agree this forum must be one of the effective community to provide justice for scam accusation but for a fiat based casino, this forum got nothing to do except marking that casino as a scammy one.