Why was eleuthera described as a failure to the eleutheran adventurers​

The Loyalists started plantations with the slaves they brought but failed to recreate the wealth they had in America and most eventually left, leaving their slaves behind. Eventually pineapples became the top crop of Eleuthera and by the mid-1800s exports to England and the United States soared. More than 200 sloops and schooners would sail every morning from Harbor Island to north Eleuthera where plantations of pineapples fed the international market. In 1872, 1.5 million pineapples were shipped from Harbor Island alone.  

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