What do you speculate the price of bitcoins to be when it has reached all the parts of world and people adopt to it as a replacement for fiat throughout the world?
world gdp= 75 trillion$
competitively bitcoin
21 million btc = 75 trillion$
1 btc= 3,571,428.57 USD
It may take a long while as the current and the newer generations accept it, what do you think?
Indeed. If bitcoin becomes a unique world fiat replacement, and is used in the same way (velocity of money similar), then that's the obvious outcome.
However, it is impossible, for technical reasons already. Bitcoin currently is limited to about 7 transactions per second because of the block size. This can be altered. But Visa/mastercard alone already processes 1000 times more. I'm not sure that a 1000 times bigger block chain/block size/.... can be handled in the same way by the bitcoin network. The confirmations are also too slow to be used for daily normal money use. Bitcoin wasn't even considered that way. Bitcoin is interesting for store of value, or abroad payments, and it seemed interesting for anonymous and private payments, but it turned out to be too weak for that, when looking what happened to silk road.
Second, if bitcoin is succesful, why wouldn't altcoins take a market share ? After all, there are serious difficulties with the bitcoin protocol, such as too little privacy and anonymity, which can find better solutions in altcoins.
Third, the bitcoin economic model is based upon mining seigniorage about equal to spending on hardware and electricity consumption. If bitcoin rises to these values before sufficient halvings, mining will take up a significant part of all hardware and electricity consumption of the world production.
All this makes that it seems rather naive to think that bitcoin will replace a significant part of the fiat money market by itself.
If bitcoin replaces a few percent of that market, that is much more realistic. Then we are in the few tens of thousands of $ value.
So still a factor of 100 - 1000 to go. More, seems naive.