Every member state has its own laws for it, and AFAIK all of them now regulate (or ban) online gambling more or less.

There were many startups here in Sweden in the early '00s, and I believe they had taken advantage of a legal loophole which has since been plugged. Regulation has tightened. Players have to be 18 y/o, use digital ID and not be registered as a gambling addict. But I still find the industry to be depraved, to be honest.