100% squashing gambling has generally not been successful, but the strategy of fencing it away from most of society and keeping it in a set of defined places that require people to actively seek it out has been successful enough that people forget why we don't allow gambling in every convenience store in the country. I'd say the additional "convenience" of having it in your pocket all the time is a new nuance, but doesn't necessarily change the fundamental equations.
We will relearn. Our grandchildren will forget again. (Unless things have really changed.)