In five years time we're all going to be fitting ADS-B anyway. Flarm could have been at the forefront of that movement, which would have leveraged their valuable IP relating to flight path prediction, but they appear to have squandered the opportunity by instead fighting a rearguard action to protect their RF protocol.

My subjective impression of the latest Flarm software version is that it is not as reliable as it was, and range is reduced. But I have no hard data to confirm that.