because the old system was based on the Gold standard which is sound money.
and Bitcoin is a sound money system. So the world will run on sound money again.
The fiat system which is not sound money will die.
Discussion
Thank you. But this would require to end or seriously limit the abbility to use fractionnal reserve. And how would bitcoin do that ? As long as there are major financial institutions with enough trust from people, I see no limit in loans. (Micro)Strategy could one day lend 100x their bitcoin reserve in any new bitcoin-backed coin. Or I am missing something ?
Bitcoin will end fractional reserve banking. Bitcoin will replace the fiat banking system.
What you need to do is research and read up on what is sound money and how sound money works.
You need to understand how the old system works in order to understand how Bitcoin works.
I do read a lot about it. Still, I didn't find any direct "law" that says "sound money ends fractional reserve" nad why. If you have any precise resource to share about this, I would be happy to read even more ;-)
Of course I understand that if everybody use only sound money, fractional reserve could not exist. But my point is that even if bitcoin becomes the main currency of the world, it might be the reserve currency, just like gold has been. So more precisely, what would prevent bitcoin to become a reserve currency ? If at some point it is hard to get, because it is limited, most people may want to use alternative currencies, and we would be back to the same cycle again. I do not see anything preventing it from happening.