As I see it, no meaningful private discussions means no partners. No partners means no more money for the network. No more money for the network means at some point FirstNet will not be able to continue to function, which means Public Safety will have lost the most important opportunity it will ever have to fix its interoperability problems.
The majority of the Public Safety community still believes today that this new network is about data and video and not about voice, at least for the foreseeable future.
The people needed for the CEO, COO, CTO, and CFO-type of positions reporting to the FirstNet board need to be high-level, skilled people who have been involved in planning and setting up a broadband network and handling the finances, technology, and operational aspects of such a system.