Those that have been following the auction over the 700MHz band in the U.S. were probably very interested by a relatively unknown company potentially bidding. That company was Frontline Wireless, and they were expected to bid on both halves of the spectrum, commercial and non-commercial. That was until the announcement that came just recently in which they said they are shutting business down.
Due to unspecified reasons, perhaps the overwhelming financial obligation that bidding on the spectrum would have entailed, Frontline has closed down and did not mention any other plans. Frontline was promising an open network leaving Google now the only company promising to provide that.