It ended with the exchange of ratifications of the Treaty of Ghent. In 1812, with President Madison in office, Congress declared war against the British. The war began with an attack on Canada, both as an effort to gain land and to cut off British supply lines to Tecumseh's Indian confederation, which had long troubled the US.
I feel like “The voyages were risky, and there was no insurance to cover the risk” is the answer. Investors didn’t want to lose money and the only way that they would somehow break even on the cost would be if the voyage found riches.
