One reason for the rejection is that the market is manipulated by the Chinese. But in the near future, the Chinese exchanges will be regulated properly. The trading volume has reduced a lot there.

"One commenter states that, since 2013, the price of bitcoin has been defined mostly by the major Chinese exchanges, whose volumes dwarf those of exchanges outside China. According to the commenter, those exchanges are not regulated or audited, and are suspected of engaging in unethical practices like front-running, wash trades, and trading with insufficient funds. The commenter interprets pricing data from these Chinese exchanges to mean that the price of bitcoin is defined entirely by speculation, without any ties to fundamentals.32 Another commenter also observes that Chinese markets drive much of the volume in the bitcoin markets and that the bitcoin/Chinese Yuan (BTC/CNY) quote is apt to trade at a significant premium to the bitcoin/U.S. dollar (BTC/USD) quote. The commenter points out that large arbitrage opportunities would not exist for long in efficient markets, but they do persist in bitcoin markets."