According to Cointelegraph, Ethereum co-founder Vitalik Buterin encourages the crypto industry to adopt copyleft open source licenses to address concerns about the industry's loss of collaborative foundations. Buterin stated in a blog that he once supported 'permissive' software licenses but now prefers the 'copyleft' approach. Permissive licenses allow free modification or distribution of source code, while copyleft requires users to open source any derivative works. Buterin believes open source has become mainstream, pushing companies to adopt more practical solutions. He pointed out that copyleft enforces reciprocity, ensuring that innovation benefits the entire community, not just a few closed-source participants.

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