For sure this is happening on 3rd world country prison. Here in PH even on prison they have a drug den and private house with complete amenities for drug lord that still can operate their drug business even inside the prison.
So a simple gambling inside is highly probable because drugs is much worst than gambling.
Maybe in prison they are not betting with money rather some task and chores that assigned to them since they don’t care about money when you’re in jail.
Oh, they do care about money, and you've already said it. A drug lord has all the amenities and instruments to continue running his business from his "cell". A business that brings a lot of money.
Talking about gambling in the prison I don't think it is a whole prohibited because there are prisoners who are been sentenced without the possibilities of parole.
That doesn't matter at all. In every prison in any country, gambling is forbidden for every inmate. Now, we all understand that these rules aren't followed by all, and there are holes and ways for inmates to gamble. As they can get phones, cigars, drugs, even "company".
Those are giving a level of privilege to participate in some events such as sport games or even the table games such as chess, Poker, dice, cards and more are also eligible for the prisoners just to feel some good and still exercises their mental abilities not to be dormant in creative mindsets.
The privilege might not support gambling but yet the prisoners would still gamble over it without the knowledge of the prison service attenders instead of just the fair playing
Sorry that I say it, but where are you living? Probably, on another planet... The system doesn't want either to educate them or exercise their abilities, etc. Ofc, some things are given as
privileges , but that is just smoke in the eyes. For the system, they are garbage, and it treats them this way. Only very few exceptions exist (1st in this small list is the known
Bastoy Prison in Norway); the majority of all the prisons are considered dumpsters.