https://techcrunch.com/2018/07/06/vitalik-buterin-i-definitely-hope-centralized-exchanges-go-burn-in-hell-as-much-as-possible/

Ethereum creator Vitalik Buterin talked about a wide range of topics during an interview with Jon Evans at TechCrunch Sessions: Blockchain. He was surprisingly balanced and stated multiple times that everyone has different needs and it’s hard to live in a world where everything is centralized or decentralized.

“Back in 2013, when GHash had 51 percent everybody freaked out. It's happening a second time and people aren't really talking about it this much,” Buterin said. And it’s true that if you look at Bitmain alone, the company is edging toward 51 percent of network hash rate.