Cock fighting is a kind of gamble that bet is placed on the two cocks whereby if cock A wins all cock A supporters wins. It is a legalize gamble in some part of Asia
You're right this type of game is what has been evoke since the early days in gambling when there have not been any digital technology with gambling during that era, not only cock but gamblers also make use of other animals like rams to gamble in those days, this were best enjoyed on an open field with a numbers of spectators to witness the fight and also cast their bet, cock fight is as interesting and same way entertaining and gamblers still practice this type of gamblings till present days all over the world but common in the remote regions under rural settings.
That's understandable that cock fighting is an ancient game that was popular in a time when there was no internet and no such digital technology but the problem is why this sport is still popular in the current era in some areas?
There should be a complete ban on this sport and there should be extreme punishment for those who get caught playing this sport. When there will be no cock fighting, there will be no betting on it.