No more than three empire zone capital corporations may be established in each zone for the purpose of raising funds through private and public grants, donations and investments, to be used in making investments in and loans to certified zone businesses for the purpose of encouraging the establishment or expansion of businesses and the creation of new jobs within the zone. A zone capital corporation may serve one or more zones within an economic development region, established pursuant to article 11 of the Economic Development Law, or zones within two or more of such regions.