Regulatory Uncertainty: Governments around the world struggle with how to classify and regulate cryptocurrencies due to their decentralized nature and potential implications for financial systems. There's uncertainty about whether to treat them as currencies, commodities, securities, or something else entirely.
Risk of Illicit Activities: Cryptocurrencies have been associated with illegal activities like money laundering, terrorism financing, and tax evasion due to their pseudonymous nature and lack of oversight. Regulators are concerned about their potential to facilitate such activities.
Resistance from Established Institutions: Established financial institutions may resist the legalization of cryptocurrencies due to concerns about competition, potential loss of control over financial systems, and disruption to existing business models.