Unlike in other standards, in DRM there is the option of sharing a transmitter and antenna between independent broadcasters. Broadcasting of as many as six individual DRM signals from a single transmitter and antenna has been successfully demonstrated (e.g., India). As you know, one DRM channel (96kHz) can carry two to three audio programmes; so, on a single transmitter one could broadcast as many as 18 audio programmes in pure DRM mode (plus another 6 data channels). In this scenario each broadcaster, using the same transmitter and antenna, remains in full control of its broadcasts not needing to rely on an expensive third-party large multiplex operator and being able to share the electricity and other costs.