Cryptocurrencies have proven that we Can transact anonymously without a centralized interference.
The Blockchain has proven that data can be stored in a decentralized public ledger against any form of manipulation.
Smart contracts has proven that two or more people can trust a system in which the assigned contract managing it will be fair to all parties...
When speed, simplicity and efficiency is added to all of this I think decentralization and blockchain technology can go far in the real world as regards adoption.
What do you think of the chances of cryptocurrencies to succeed?.
Well, the cryptocurrency has already shown well that it can grow , and I think in the future it will be very strong in our world to use this cryptocurrency, already in some countries often use it