When they acquired it they knew there are proceedings that may make their intended use impractical:
> In April 2021, the FCC granted a license modification for SpaceX, but it made a point of saying it was conditional on future actions at the commission, “including but not limited to the 12 GHz proceeding,” and therefore “SpaceX proceeds at its own risk” in terms of what it does in the 12 GHz band.
So to continue the analogy they bought the land while rezoning proceedings were already under way and were warned that if they build something they may have problems later.