SEC Chair Gary Gensler has reiterated his intent to regulate decentralized finance (DeFi) and cryptocurrency trading platforms, including Coinbase, by redefining what constitutes an 'exchange'. In a speech on Thursday, Gensler emphasized the need to close regulatory gaps and protect investors. The proposed changes aim to bring DeFi and trading platforms under the SEC's purview. This move, however, has sparked concerns within the crypto community about potential overreach and the impact on innovation in the sector.