Because they don't want to lose any money
They made this colony so it could be used as a defense buffer for the Carolinas so the Spanish couldn't get there. Oglethorpe also wanted to free some debtors in jail in England and use them in a new colony and people who suffered in jail.
Explanation:
The New England colonies had rocky soil, which was not suited to plantation farming, so the New England colonies depended on fishing, lumbering, and subsistence farming. The Middle colonies also featured mixed economies, including farming and merchant shipping.
