That's true, but for me I can't really say how bitcoin gain it's values, but I think when there high demand of bitcoin it rises and when there's a high supply it falls.
The demand and supply mechanism play a major role in The determination of the value of bitcoin .
The government policies is another factor that influences the price of the Bitcoin.
Bitcoin gets its value when people invest in it and buy it. Bitcoin is a commodity and this is why it has a real market value. But the only difference is that it is essentially a digital coin or currency.