No, adding support for new protocols is far from trivial. There are so many factors that can make this non trivial such as encryption, channel hopping, DSS, hardware required, etc.
I spent about eight years working alongside a software defined radio project. I saw the effect first hand. If you build an ecosystem in which folks with the appropriate skills can make a contribution, they tend to show up.
The main challenge is licensing, not technical siphistication. Most of the protocols in question are quite a bit less complex than wifi or Bluetooth.
The main challenge is licensing, not technical siphistication. Most of the protocols in question are quite a bit less complex than wifi or Bluetooth.