Like that, the basic science of trade ... because BTC is different from Fiat Money, fiat money has many factors so it is expensive. the next thing that is usually discussed is how so that the request increases so that the price rises. but it's true. average BTC / cryptocurrency prices are based on demand and supply.
It’s vary from supply and demand the more demands the price increase. People attracts to bitcoin because of it’s benefits can get and the return of profit when investing. With the fiat money indeed it has many factors that differ from btc. So basically the demands were btc price is increasing.