What strategy do gambling developers to expand their market to countries which do not allow any type of gambling?
Do they continue with allowing users to use VPN, or do they have "some trick"?
Allowing users to use VPN is one of the possible ways to deal with the ban by government, the other possible way is by providing mirror link like what Stake does.
If you are familiar with Indonesian local gambling sites, you should have known that most Indonesian local gambling sites provide special link(s) to their players so they can bypass the ban/block.
I think these 2 ways are the most common thing which is used by online casinos that operate in a country where gambling is something prohibited.