I'm not sure I understand your logic here. Android phones were able to quickly move to micro USB because they weren't restricted from doing so by a government regulation.
If there was a government mandate requiring phones to have whatever connector came before micro USB, wouldn't that have prevented the Android phones from changing connectors/choosing the new innovation?
Or was there a location where micro USB was required by law before, and since I don't live there, I wasn't affected by it?
Edit: Strike that last sentence, since I see in other responses that there was, indeed, a location where micro USB was mandated. So my new question is: How does a company change to a new/better connector, if it's required by law to use an old connector?
Edit edit: Looks like other responses show there was no mandate, that's just something that people on HN assume. It was a recommendation, not a law, like it is now.