You bring up a really good point. I'm super curious what the legality and ethics around training machines on licensed or even proprietary code would be. IIRC there are implications around code you can build if you've seen proprietary code (I remember an article from HN about how bash had to be written by someone who hadn't seen the unix shell code or something like that).

How would we classify that legally when it comes to training and generating code? Would you argue the machine is just picking up best practices and patterns, or would you say it has gained specifically-licensed or proprietary knowledge?