In addition I will say that the debate between or around prediction market and gambling continues because both involves risking money based on outcome that isn't certain. That's why it's still difficult for alot of people to separate the two of them in practice. So as for companies that do operates in areas with unclear rules, courts and regulators usually gets the final say. Most times businesses have this believe that their interpretation of rules are right, meanwhile authorities sees it differently and with this kind of dispute can often lead to regulatory scrutiny and law suits
The wrong interpretations gets them into trouble and costs them for misinterpreting laws, they can be restricted for the time being, but with the right approach, and adjustments, they can still operate in Mexico, after all disputes are resolved.