It's too bad we can't experiment with interesting things like Copilot without worrying about remuneration and the respecting of rights. But that's the way of the world - we must think of these things. MS/Github should give code copyright holders a simple and easy way to opt-out of contributing their code to the Copilot corpus. Currently the only way to opt-out is to make your repo private. That's not good enough.

It would be better, of course, if Copilot was opt-in, but they'd never go for that.