The maximum number of bitcoins that can be issued is fixed.
Eighty percent of the coins have already been mined.
What do you think will happen to the price after all the bitcoins have been mined?
What do you think will happen to the price once all the bitcoins are mined, and how do you think bitcoin will affect the global economy?
No one knows on what would happen in year 2140+ because this is the year on where all coins be mined whether bitcoin is still able to exist on those years or totally been replaced by something new
because if we do tend to presume out on what are the things or events happen in 100 years time then its really hard to predict even just guessing on tomorrows whether doesnt give out 100% accuracy.
Considering that there are coins which are not in circulation and those are lost coins. Global economy is something not really that mainly touched up by crypto market.