Bitcoin is definitely a future of gambling as it give you an privacy to gamble without disclosing your identity and you don't have to share your personal details so its an blessing for people who are addicted to gambling.
And for people from a country that mark gambling as an illegal activity, bitcoin and other crypto currencies give a better solution for them. Hence, the numbers of people who will gamble using it can be significanly increased.
Yeah its an blessing for those countries who treats gambling as an illegal activity and if you caught gambling then you can also go from imprisonment which can affect your image in the society but with bitcoin you can get rid of all those issues.