If we had not become independent from Great Britain because we lost the Revolutionary War, we would have remained as British colonies. The British may have tried to tighten control over the colonies for a period of time. However, it is also possible that the British may have learned lessons from the war. This might have opened a dialogue between the British and colonists where Great Britain would have tried to meet some of the requests the colonists were making.
If the British took a hard line approach, there probably would have been a second war for independence not too long after the Revolutionary War ended. The colonies would most likely have stayed a part of Great Britain for a longer period of time if the British would have worked with the colonists and tried to grant some of their requests. We might be part of the British Commonwealth of Nations today if we got our independence in this manner. When looking at other countries that were British colonies, countries like Canada and India eventually got their independence from Great Britain. This, most likely, would have been the case with the United States also.