throwaway55537

Defector: never cooperates

Forgiving: always give, even to those who don't cooperate

Tit-for-tat: cooperates by default but does not reward defectors/freeloaders. This often the best strategy.

Interesting how this applies to software licenses.

Permissive licenses are clearly forgiving actors.

Copyleft/protective licenses are a gentler version of tit-for-tat.