Even in my country Bangladesh, sometime in the past, cock fighting was organized as a village competition in the rural environment in different areas during the rice harvesting season. At one time the kings of this country used to organize cockfights for their family entertainment.
That's true that cock fighting can be a good source of having being entertained locally, this may differs from one country to another because of the regulations made against animal indescriminate use for our personal purpose, now the use of cock in this regard is no longer serving as before.
However, this rare popular game is played in very few areas today. I have never seen such a game in my life but we get some idea of cock fighting competition from history. However, cockfighting is still very popular in other countries of the world.
Maybe this has been a thing of the past where you discover cock fighting as that entertaining, except for few remote places that uses cock and that also has been occasional to mark an event by using cocks fighting against each other to serve as an entertainment.
If you take a look at the history behind cockfighting, you will realize it is a very ancient practice in many places where those animals were available for the folk population to raise and breed.
I do not know much about Bangladesh, but I would not be surprised if it was very widespread in the past and now has continued to be practiced in villages in that country, because the traditional weight it has.
Here in my country, we may not have as much history with that tradition, and yet we still partake in it, being Bangladesh a country of the old world with longer history and access to cocks.
In the end, all of this goes back onto the tradition versus progress argument. Whether tradition is such of a an important thing, so it is necessary to make animals to fight themselves in a savage way.