Selling the amateur/LoRaWAN spectrum to a private company for more cellular bandwidth. And, ostensibly, a terrestrial GPS backup that operates concurrently with those cellular functions, but that's a red herring in my opinion, it's basically a land-grab of public unlicensed frequencies to lease out to Verizon/ATT/Tmobile.

I found this:

A current proposal regarding the 900MHz band, primarily put forward by NextNav, suggests a significant reorganization of the spectrum to allocate a portion for their terrestrial 3D positioning network, potentially creating dedicated uplink and downlink bands within the lower 900MHz range, which could impact existing users like toll systems and RFID devices due to potential interference concerns; however, this proposal faces strong opposition from various industries currently utilizing the band

I work with some of that RFID/Tolling equipment and I can tell you this would be very bad news for a lot of industries.

And 100% incompatible with all existing installations. I also doubt Amazon will be happy about their Sidewalk mesh network getting degraded.