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?.
I think the cryptocurrencies can be more successful in the future. Many of them have great ideas, great prices and great potentials, so, I think we can see many new and old coins which can be better in the future.
The cost per coin is going to make it more open for people to invest while having a proper testimonial on the coin.