[jfman]

There are unused frequencies and there are 64 QAM frequencies. Your own link proves those facts. Your own link proves two multiplexes carrying much less than the six HD channels you state is a maximum.

If we take your stance to the extreme Virgin would never add channels except on a one in one out basis ... the “current configuration” would never allow it. That’s why the current setup is useless in projecting the future. That applies today just as at any point in the history of cable tv.

Sky would still have 4 channels on the Astra 1 satellite if the “current configuration” was set in stone.