Lets create the PineCom

[diodelass]

With a licence, you can already do that with commodity devices

Heck you can do it without a licence too, but not as well.

Yep!
If you're looking for voice communication over moderate distances in the US, you can pick up a decent FRS or MURS handset for around US$50, which will interoperate with countless devices already on the market and require no license. Other countries often have similar unlicensed mobile allocations like this as well, but I'm less familiar with them.
In addition to the superior propagation characteristics of the VHF spectrum (as compared to UHF for FRS), MURS also permits data transmission, which means textual communication could also be a possibility. I think most handsets capable of digital communication are considered specialized equipment at the moment, so they tend to be very expensive, but this would be an easy thing for Pine64 to change. Pretty much all you need is an MURS radio glued to a minimum-viable audio chip, and the modulation can be done in software.
The need for regulatory approval in many different jurisdictions worldwide might make this difficult to realize, but the point remains: relatively high-power, narrow-bandwidth communication is a well-established technology, and hardware to achieve it is already inexpensive in many places. More importantly, it lacks the big uncertainties of newer proprietary technologies like LoRa, which have not been shown to be useful for the same purpose.