I believe in Ethereum. He really has a future like a common currency. And I will find it. Efferum is already used in everyday life, more than bitcoin. This I tell you by example.
Nobody will, because I do not believe that someone is able to shift Bitcoin from the first place. Already so much money is invested and invested by large investors in this coin, that they simply will not allow anyone to remove the leader from the first place. Each investor protects their investment.