Ethereum co-founder Vitalik Buterin now advocates “copyleft” open-source licenses, a shift from his previous permissive stance. He argues that as the crypto space becomes more “competitive and mercenary,” copyleft is essential to ensure that innovations benefit the entire community. This license requires derivative works to also be open-source, promoting reciprocity and preventing closed-source proprietary forks, thereby fostering a larger, shared code pool.
