First thing they will teach you in Economics class is the Supply and Demand. And this mainly affects the price of Bitcoin. What is amazing about it is that it is being 'controlled' by the consumers unlike the other currencies which is being controlled by the government. Yes it is volatile and a lot of other factors may affect the price. However, what's good about it is that it is universal and no country has the power to manipulate it's price.
Indeed, every country government has a separation between crypto and fiat and they won't intervene with how people create their own perspective towards investments. Bigger whales could control this trend if they wanted to, that's why every situation depends in what type if trading you'll apply each time you approach with every plans you have in the future.