Giants of the crypto-currency world are striving to maximize their activities and strengthen the market.  That there is only one Bitmain.  "Miner's expansion" - in another way you will not name.
 Let's remember: back in January Bitmain announced the move from China to Switzerland, then to Canada and finally to the US.  While Bitmain "arranges comfortable", the rest can only shrug.
 Bitmain seized the market and discarded all its competitors for many years to come.
 Bitmain is a good example of how a bunch of people can manipulate the market.  Thought that Trump's publication on Twitter could affect the dollar?  Maybe.  But the next bitmix from Bitmain can affect the bitcoin rate.  Information has long been leaked about the fact that they made a more recent nook, more steep chips.  As you can see, they do not hurry to sell it, we do not see them on the market with you.
 Do you think that they can manipulate the market only by increasing the hashed?  Or throwing power from one coin to another?  Hardly.
 They can easily push the price if they want to.  In the same way they can ramp it.  Their hashed allows them to hunt hundreds of bitcoins daily.  On their accounts, a huge number of different crypto-currencies.  I'm already silent about their sales revenue from sales of asics.
 I hasten to please: bitcoin is unlikely to fall.  It's not profitable for anyone, starting with the same Bitmain, ending with AMD or Nvidia.  Have you seen what happens to their shares since the beginning of 17?  And you have burned.
 Last year, Bitmain received only officially $ 4 billion in profits, Nvidia received the same amount, but if the latter company went to this for 24 years, Bitmain managed to do it in 4 years.  Think about it ... Die the crypto currency or not!