I think the reaction from software devs on how Copilot's uses their code for ML is interesting in that all the ML companies have been doing this with all other forms of produced content: texts, posts, messages, photo captions, etc. And most likely even less care went into adhering to laws or ethics. Yes code has licenses and thus more distinct legal ramifications but on the other side are people who don't really understand that every time they interact with software or produce some content, everything is gathered and harnessed to power all these companies.