Parents and guardian need to step up by monitoring their children's activities and discouraging any involvement like running errands to gambling houses. Gambling operators should also take stricter measures to enforce age limits like requiring ID.
What exactly do you think gambling operators should do? Maybe obligatory KYC pass and ask to resubmit documents from time to time, or accept deposits only after verifying that a person is 18+ already? Such "stricter measure" will scare a lot of adults from gambling. And how exactly do you imagine a parent could monitor their kids activity, and especially step-by-step? By quitting job and doing 24/7 surveillance?
I think gambling sites only want huge profits with the number of members playing on their sites, regardless from of the data used for Kyc real or fake so far, because their dont care about age limit rules , I think to prevent minors from gambling should be the main responsibility of parents at this time, although it may interfere with their activities but parents should take the time for regular supervision, such as Monitoring children online activities regularly can be done without must to stop working, like checking browser history and using monitoring tools if possible.
At this point, whether casinos pretend or not, many of them still want to obey the law and put in place all the necessary underage restrictions possible. So if any children below the age of 18 or 21 (depending on the country) gamble with such casinos, the law will 100% absolve them of any wrongdoing because they've done their part, it's left to the children and the parent. Talking about the parents, we can't entirely blame them still, so I pray they have the wisdom to do this because some children are so stubborn. Give them the right standard and show them the best way, they may still err.