Cathie Wood, CEO of Ark Invest, emphasized Bitcoin's central role in the cryptocurrency space during a September 29 interview with Savvy Finance. Wood highlighted that while Ethereum is crucial for the DeFi ecosystem, the majority of Ether-related fees are directed to Layer 2 solutions. She noted that although Layer 2 competition could boost Ethereum's significance as a Layer 1 network, the question of whether Ethereum can surpass Bitcoin remains contentious.