I know that the reason why we need to tell people about bitcoin is to spread the awareness of bitcoin,so that more people will adopt bitcoin so that it can be recognised and use by everyone just the way fiat is used. This will make bitcoin value to increase due to its volatile nature and the price is been controlled by demand and supply. Bitcoin is limited in number as we all know that we only have 21million bitcoin.

I have been wondering as a newbie with little knowledge on bitcoin that how is it possible for everyone in the world to own some fraction of bitcoin with the limited number just like the way everyone is using fiat.  Is it that these 21million bitcoin will be enought to serve the world with a total population of 8.1 billion because I know that we have whales who will buy a huge amount of bitcoin and just store it in their wallet without using it,just the way the rich men and politicians keep so much funds in their account or at home without spending it. I also notice that one country can't print the currency that the whole world is using but various countries printed their own currency. Another thing that I noticed so many investors prefer to holdli their bitcoin which might make it not sufficient for everyone.

My question is that is it possible for everyone to have bitcoin with the number of limited supply of bitcoin ?