The FCC wants to deny Lightspeed the use of their licensed spectrum because neighboring users (GPS receivers) cheaped out on their receivers and can't tolerate

The FCC wants to deny Lightspeed the use of their licensed spectrum because neighboring users (GPS receivers) cheaped out on their receivers and can't tolerate Lightspeed's transmissions. This is an insane oversimplification. RTFA -- that part of spectrum was never supposed by used by any terrestrial transmitters. GPS and other services were built under the promise that they would not have to contend with powerful, localized transmissions on adjacent channels. There are strong technical reasons why designing receivers to be immune to such adjacent-channel interference is impractical. The FCC tried to let bureaucrats instead of engineers run the show, and unsurprisingly it's come back to bite them.