The cable operator shall have the right, privilege, and authority to lease, rent, or in any other manner obtain the use of wooden poles with overhead lines, conduits, trenches, ducts, lines, cable, and other equipment and facilities from any and all holders of public licenses and franchises within the City, and to use such poles, conduits, trenches, ducts, lines, and cable in the course of its business. The cable operator shall install its cable on existing poles owned by other holders of public licenses and franchises with the City whenever possible for the installation of its cable. When installation of cable on poles is insufficient, or when the holder of another public license or franchise has installed underground cable, then in that event, the cable used by the cable operator shall be installed underground.