Concerns about the centralization of mining have been preserved in the community since it became apparent that most of the hash-rate of the network belongs to several mining pools. CEO Ripple Brad Garlinghouse drew attention to the fact that the problem is more ambitious - many large pools are located in China. This is reported by The Street.
A number of prominent people, even Steve Wozniak, has said that he sees a world where Bitcoin is the primary currency. I think that's absurd. I don't think that any major economy will allow that to happen. By the way, it doesn't make sense. I'll tell you another story that is underreported, but worth paying attention to. Bitcoin is really controlled by China. There are four miners in China that control over 50% of Bitcoin. How do we know that China won't intervene? How many countries want to use a Chinese-controlled currency? It's just not going to happen.
Although this statement may seem sensational, the largest mining pools of Bitcoin like BTC.com, Antpool, F2Pool and BTC.TOP are really located in China. They account for about 59% of the bitcoin hash-rate. If we add to them smaller Chinese pools, then this country will have more than 75% of the computing power of the network.