Bitcoin is not the typical coin where the project owners could easily remove liquidity or rug pull, that could crash the price to zero as we've seen in some projects. It is an open source and community driven project with no smart contract or hidden code. The highest that can come close to affecting the price is market sentiments, like when there's cases of hack, pandemic, regulations and crypto exchange crackdown. IMO, that's as far as it can go and there's absolutely nothing that can bring the price to zero.