Former FCA policy insider Arredondo has highlighted a significant challenge in the UK's crypto sector, emphasizing the need for interoperability among blockchain networks, stablecoins, and digital money projects. Arredondo argues that while the industry has focused on developing individual systems, it has neglected the importance of standard-setting to ensure these systems can work together effectively. This issue is gaining importance as governments and financial institutions increasingly explore tokenized deposits, stablecoins, and central bank digital currencies (CBDCs). Arredondo points to the European Union as a model for integrating various forms of digital money under a unified framework, allowing stablecoins, tokenized bank deposits, and central bank money to coexist. She also addresses the growing involvement of traditional financial institutions in crypto, which some see as a departure from the sector's original goals of decentralization. However, Arredondo views this as a positive development, indicating that crypto's foundational ideas are being embraced by mainstream finance, thus maintaining trust in money.