There is a particular volume of Bitcoin available in circulation. As more people tend to buy in to bitcoin, the value increases. We are just in the starting phase of global adoption of Cryptocurrency. So, the current sharp decline/deep in the value of Bitcoin is only temporary because its upward mark has not yet been reached. And I do believe with experts dat the fall in price isnt a surprise which will continue to happen and the it solidly builds up in the adaption stage.