Questions or not, but the world seems to have a say to the rising of the cryptocurrencies, its not that they're ignoring the fact that the cryptos were destroying their businesses or stocks or the system of every nation's currencies, but their simply making an act to regain its power by creating an online ways of fiat payments for any transactions.
1. I have yet to hear a case of "businesses or stocks or the system of every nation's currencies" that is actually destroyed by crypto. Crypto has destroyed not even a single of them.
2. Fiat online payments were already popular even before Bitcoin came to the fore or even way before Bitcoin was conceived.
but here are the questions, can they hold off this against the rising of cryptocuurencies?
Yes, most probably.
fiat or crypto? or both?
Both.
gold or crypto? or both?
Both.
what would happen if the world abolish the use of paper-made money and adopt whole-heartedly the effectiveness of cryptocurrencies?
Then commerce becomes more efficient; it becomes more convenient to mankind. But I guess that won't happen in the next half a century at least. The world is so big and there is a gaping chasm impossible to bridge between the most high-tech city and the most impoverished village. While we are talking of abolishing paper money and replacing it with a digital currency, there are individuals out there who are dying of thirst and hunger.
what nations could possibly rise if theres no more fiat in the world?
The rich nations.
the world may never be the same as today, are you prepared and ready for it?
Yes, I am. Always.