I don't know the reasons of the other country why they allow below 18 age to play gambling and bad with that is they have child they can play. I hope other country will follow the age limit of minimum of 18 to play gambling because that is the right age for us . Even they have law that still not follow because many children play gambling.
In the Philippines many teenager play gambling and bad with that is they play outside it is very sad to see those children instead of studying they do playing and mostly also of that are addicted to the drugs.
Its depend on the Parents how they brought their child in this world.
Gambling is just a material that can give people either a win or lose but the potential of being a gambler is from their society and community and the people surrounds them.
even the country will allow people to play in mature age still we cannot prevent youngsters to gamble.