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.