Bitcoin market is open 24/7, and the supply is increases every 10 minutes. Therefore, unless there is global demand equal to this supply, the price will decrease, and if there is demand higher than this supply, the price will increase. Therefore, you will find that the price of Bitcoin is fluctuating and any sharp change in the supply demand equation then it directly reflected in the price.
Fortunately Bitcoin adoption is very strong and it has been increasing sharply over recent years. I believe new demand will increase with a bigger rate than increase of supply from new Bitcoin blocks.
Can Crypto Match the Internet and Hit 5B Users?You're still early: an objective look at Bitcoin adoptionSince the behavior of supply and demand can be predicted, and therefore the price can be predicted by factors that affect supply and demand, such as news, legal legislation, Bitcoin mining, and other reasons, some of which are collected in technical analysis indicators.
We can know very well about Bitcoin total supply that is 21 million, its future supply but we can not know well about Bitcoin adoption, new demands on Bitcoin. Demand increase comes from education, knowledge and FOMO effects that are important for Bitcoin all time highs in its 4-year cycles.
Controlled supplyHow is the 21 million Bitcoin cap defined and enforced?