The FCC began auctioning 3.7 - 3.98 GHz to 5G carriers earlier this month. The combined bids are already at $70 billion. Yes, that's billion with a "b"... over $200 per man, woman, and child in the U.S. This is serious money, even for companies as large as AT&T and Verizon. Bidding resumes on January 4 and the value of the spectrum is expected to rise further. An auction for 3.45 - 3.55 GHz will follow. Absent a miracle, I don't see how hams can hold onto more than a sliver of spectrum between 2.45 and 24.25 GHz.