Yes, you're right, there were many studies made by the companies building those and the companies against those.

And now that you mention it, I remember a class I had called "Ethics & computer science".

I guess I should have thought more about expressing my idea that whatever ethics work we might setup "now", we won't be able to predict the advantage & disadvantage of any technology in the future.

Whatever restriction we'll set in place would be based on our actual cultural situation.