What happens if Coinbase goes out of business?

Could you elaborate on the potential implications for cryptocurrency investors and users if Coinbase, a major cryptocurrency exchange, were to cease operations? Specifically, how would this affect the liquidity of digital assets, users' access to their funds, and the overall trust in the cryptocurrency ecosystem? Would investors lose their holdings, and what measures could be taken to mitigate such a risk? Understanding these potential outcomes is crucial for those involved in the crypto market.