If we're not extremely careful about it, it may not become commodity technology, it may rest solely in the hands of a few companies who maintain full control of

If we're not extremely careful about it, it may not become commodity technology, it may rest solely in the hands of a few companies who maintain full control of it. All it would really take is a few big successful players who are behaving like Tesla (you're not allowed to use self-driving for ride sharing) and a few nasty failures from smaller players before regulators crack down and say "okay, you now need to meet these extremely stringent guidelines and provide an enormous sum in insurance" which would basically inhibit competition. It's a nasty mix of capitalism and regulation that can kill a market before it really starts.