Odaily Planet Daily reported that Ethereum co-founder Vitalik Buterin stated that he has always supported permissive licenses, as he hopes to maximize the adoption and dissemination of works. Publishing under permissive licenses helps achieve this, as permissive licenses clearly indicate that if anyone wants to develop based on my work, they do not need to worry about any issues. Additionally, from a philosophical perspective, he does not like copyright, but appreciates the leftist idea of 'using copyright against itself.' However, this idea has now shifted, with more focus on Copyleft, as open source has become mainstream, making it more feasible for companies to adopt open source. Companies like Google, Microsoft, and Huawei are embracing open source, and the competition in the cryptocurrency field is becoming increasingly fierce, driven by profit. (Note: Copyleft is a concept and licensing method that is opposed to traditional copyright. Copyleft licensing requires that derivative works based on the original work must also be open-sourced under the same licensing terms, ensuring that the work maintains its open and shared characteristics during its dissemination and development.)