Limiting the excessive online ads, like we did to the cigarette industry, would probably be a good measure, but it's not a silver bullet either. The ongoing opioid pamdemic in the US is not backed by ads and it thrives.

In all it could be just the Hype Cycle for online gambling, until it crashes into the Trout of Disillusionment, then recovers and hits a plateau where it's just not a thing.