Market makers are the ones who control the price. Scarcity on the Bitcoin market always happens after block halving. The current price action these days is now influenced by news, not by the scarcity of the Bitcoin market. Market makers can hold and sell it at a much higher price or buy it at a much cheaper price.
They are the ones who decide how much BTC will be worth, so if you see a price drop, it isn't because of the scarcity of the market; there are many things that influence the BTC price.