It should also be understood that different modes might carry information unique to that modes priorities and or legal limitations.
Thus a great deal of weather information might be obtained via HF weather fax with the right SDR (software defined radio) demodulators. While the demodulators themselves might be distributed via Satellite along with the equivalent of a reception guide that would allow SDR receivers to tune the right data at the right time.
At last check their is already >1GB/day of data being one way transmitted on various LW, MW, HF, VHF, UHF and GHz satellite frequencies around the world. A lot of that is redundant, regional or language inaccessible to those who can receive it.
The problem unconnected users have is knowing when and where to "Tune" them in even if they are not digital! That programming guide information would of course take space until it could be optimized for the region, language and or topics of interest.
Great engineers and entrepreneurs, always stand on the shoulders of those who precede them!
Delivering information is no different. New services need to first exploit as many of the existing services as possible so that we do not end up duplicating effort and cost in an effort to deliver data to the financially and communication challenged people who need it most.
Then Implement specific solutions with the greatest impact!