Remember, Bitcoin is money. Money has never really been a free market, throughout modern history. Instead, the value of each kind of money is subject to manipulation by the political and financial elites, for their benefits. (The gold and silver standards of the past were a major form of this 'management.')
The reason is simple. Money is most basic institution with which the elites run the system that benefits them. What chance is there they will allow themselves to lose control of money? Not much.