The genius behind the world's second most valuable cryptocurrency today – Ethereum – first learned about cryptocurrencies from his father. After co-founding Bitcoin Magazine in 2011, Buterin spent two years learning Blockchain technology, its potential, and the applications it had to offer. The Ethereum white paper was published in late 2013. Buterin currently serves as the Chief Scientist of the Ethereum Foundation and leads Ethereum’s research team, which maintains the core technology of the cryptocurrency and works on future versions of the Ethereum protocol.
I think a coexistence of different types of blockchains is inevitable; it's just impossible for one type of blockchain to satisfy all use cases and provide all desirable properties.