I disagree. I believe that they should at some point. If they don't, somebody else will eventually. Just reading through some of threads over at HoFo, they really seem to be floundering:
http://www.howardforums.com/showthread.php/1807558-Subscribers-Would-you-sign-a-new-2-year-contract-with-USCC-today
http://www.howardforums.com/showthread.php/1807697-Online-account-down-again
http://www.howardforums.com/showthread.php/1807297-Reception-Changes-(Issues)-in-Wisconsin
http://www.howardforums.com/showthread.php/1808064-Eastern-NC-reception-changes
and there are others.
They're losing customers, customer service seems to be tanking and users are reporting network issues. Sounds a bit like what Sprint went through actually. The difference is that Sprint had around 10x the customers that USCC has to soften the blows somewhat. I've also read grumblings about the new shared data plans coming next month since the pricing structure appears similar to VZW and AT&T, but with a lot less coverage. http://www.fiercewireless.com/story/report-us-cellulars-shared-data-plans-will-mimic-verizon-att/2013-08-14
If getting the iPhone doesn't jumpstart their subscriber numbers, they're done imo. Sprint would do well to be there to pick up the pieces.