This will give a huge push to the whole industry, because it would mean that all countries have accepted and adopted cryptos. But if this would happen, we would need to live with a bunch of hard regulations from governments.
very difficult, because it is impossible for all countries to have Crypto currencies because even now there are still some countries that ban Crypto so that what you say is very difficult and the opportunity to realize it is very small.
To realize all countries that have Crypto currency, of course it takes a long time because there must be a process to make it happen.
there are good things and bad things will happen.