In all that time they couldnt make it profitable.
Why?
The taxes were too high. Everyone besides Obama and the Europeans know this.
Stupid claim. Colonial Americans paid almost no taxes. The attempt to impose minimal taxation was what started the uproar that eventually led to our Revolution.
Also, the colonies were highly profitable to Britain's economy, if not perhaps directly to its government. And the colonists themselves had the highest average standard of living in the world.
http://www.hoover.org/publications/policy-review/article/7558