basicly its supply and demand bro you know the bitcoin supply is limited right ? and the demand is very high and dont forget about the value of bitcoin tech like blockchain its new kind technology

I think it's not only depend on the supplies and demands. Actually there people who have money to control this world inflation.
And these people do it by increasing the supply of bitcoin on the market or creating a shortage of it. It is that simple demand and supply that regulates inflation on the stock exchange and on several other forex platforms and bitcoin and other cryptocurrencies are no exception.