This is actually a good idea that is missing from nearly every machine learning product. How do you back propagate lessons from user interaction into future training of the model? It can be done, I can't think of a place I've seen it done though.
Even free software snippets have clauses like GPL or attribution.
Putting GPL code in proprietary codebase would cause a company massive headaches...
So I agree copilot is problematic by default, liability to lawsuits for employers and forced open sourcing, liability to IP lawsuits as well which will end up on employees shoulders.
