I don't think there is a mere possibility that this could happen, people mainly uses gambling not only for their own basic needs or wants, it also plays a big part in the economy, and if online gambling will be banned, then I think the Philippines will be having big problems here, especially for a third world country, gambling plays a big part whether it is online or not, bitcoin or fiat, it is still heavily relied on.
I also do not think that it is so easy to happen, as online gambling is still not banned in such countries where gambling is already an illegal activities then how can it be possible in Philippine I do not think that they can become succeeded in banning online gambling.
While the Philippine Government issued a statement a few years ago that there will be a crackdown on online games and illegal online games, we still see online games in every city here in the Philippines. I don't think this will happen. They also need the cooperation of the telecommunications company to pull this off, one of the major internet provider in the Philippines claims that they will not allow access of porn sites like Pornhub but until today, we can still access the site with out using vpn.