30 years later, most countries on this planet will use bitcoin as an alternative currency and some even use bitcoin as a primary currency. Bitcoin rise will estimate about $10000 - $100000. And many organization will try to knock down bitcoin in many ways in other to bring FIAT back.
Within 30 years of short period i don't think this gonna happen.
Using bitcoin as primary currency seem unrealistic due to high volatility in bitcoin price.
Although it seems 10,000 USD per bitcoin can be achievable within next 30 years.