Usually in this case, a shortage occurs, which in turn causes even more demand, which leads to an even greater price increase. If all the BTC is mined and is in the hands of the holders, then at first its price will rise by so much, it will be profitable to sell it at a profit. Do not forget that BTC is now an asset for preserving and increasing one's wealth, which means that its price will always rise, especially after it is not enough in the market.