*snort*
No, it likely would have gone on for much longer. Remember, most of North America was still controlled by France, Spain, and Russia. The English section was actually rather small. The Eastern Coast from Georgia to Canada, then West through mostly empty land.
There would not be any "massive nation with Canada" in that version of history, that is purely some kind of sick fantasy. France would never have sold Louisiana, Span or Mexico would have held onto their territories more tightly. Russia would never have sold Alaska.
No, the "United States of England" or whatever it would be called would be still locked more than likely to the land East of the Appalachian Mountains, the Mississippi at most. And for the next 200 years every little European War would have bleed over into the mostly empty land of North America. French Colonials invading the English, and the reverse as well. In fact, a continued Napoleonic Wars could really have changed the landscape in North America.
You seem to forget that any single change in history sends ripples everywhere. In fact, without a successful American Revolution there is also likely no French Revolution. No Napoleonic Dynasty, North America remains split up between 4 competing Empires. And there was no way short of conquest that one was going to take over the land of the other. That only happened with France and Russia because neither nation saw the United States as a threat. They were a land of tinkers and traders, with lots of natural resources but not much of a military. And as a nation of commerce, willing to purchase land as opposed to try and conquer it.
Interesting concept though. TO bad it completely fails to take into account real history.
