There are a lot of communities - in India and around the world, that believe in voting en masse - as a group, because they are a "vote bank" and they truly believe that this will give them bargaining power with the politicians.
Here is what you need to read:
It is the need of the politician to ensure that a vote bank remains a vote bank. Which makes it important that there is little development in this category. The minute development or even relative prosperity happens, you stop being a vote bank.
It is important to keep a vote bank a vote bank. Poverty necessitates that and false promises effect that. If any people in the vote bank get rich, they will stop voting as a group.
So the first condition for a politician to retain a vote bank, is to ensure that they remain poor and in need, so that they vote as a group, not as individuals with individual needs.
If you vote as a vote bank, you are, in effect, signing your own poverty warrant.
The Parsis are not a vote bank. The Sikhs are not a vote bank. The Jains are not a vote bank. Think about that.
Now, think about the state of people who have voted as a vote bank. In 70 years, not ONE of these groups has been able to step out of their existing domain.
Unfortunately, this is true of EVERY vote bank, all over the world. If you are a vote bank, it is time to step out of that and become a voter.