Vitalik Buterin argues that the increasingly competitive and mercenary nature of the crypto space makes it unrealistic to rely on voluntary open-sourcing, reinforcing the need for copyleft licensing

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Second, the crypto space in particular has become more competitive and mercenary, and we are less able than before to count on people open-sourcing their work purely out of niceness.
The crypto space in particular has become more competitive and mercenary, and we are less able than before to count on people open-sourcing their work purely out of niceness,” Buterin wrote.