The council hereby finds and declares that it is necessary, essential, a public purpose and a municipal affair for the city to be authorized to provide financing to health institutions that provide essential services to residents of the city in order to aid such health institutions to establish lower rates and charges than would otherwise prevail and to provide better service at such rates and charges. Unless the city intervenes to provide such financing, such rates and charges may increase at an ever-accelerated pace because such health institutions cannot obtain financing at equivalent cost from private sources. (Ord. No. 1468, § 1(102).)