I think everyone in the world should make a coin with the same supply.
Your thinking is very strange, if everyone has their own coins, then, who buys, each one already has it.
From where these kinds of ideas and come to your mind, I hope you are well, not in brainwashing.
If everyone chooses a mind like you, this world will experience an unbalanced tilt, there will be no more poor people in this world, everyone already has their own product to use.