This whole thing is goofy. NRFD going here, while NRPD is going to Marcs. So much for interoperability! On the UHF systems, all they had to do was change channels. No cost. Now it's going to cost them money, per radio, per month, just to talk to each other.
All they'll have to do now is change channels; it's just different systems.
And no matter what system they use, they'll have to contend with user fees to some extent; these things aren't cheap to maintain.