Fool Me Once...
So much for the "final offer". An interesting point is that the increased offer was based on paying the Mays family $37.60 a share - the original offer - while other shareholders got $39.20 a share. Shareholders were also offered a stake in the new company so they'd reap a portion of whatever profits might come from selling off assets.
I guess the shareholders are holding to the belief that Clear Channel put forth in their original acquisition strategy - "You can't lose money because the stations will continue to appreciate in value". I'm not sure if that's always true, but the assets that CC has sold already brought in more cash than expected. The majority of shareholders apparently think that they'll get a bigger slice of pie if they hold onto their stock, and CC continues to sell off marginal and/or non-core properties and concentrates on paying off debt while increasing profitability of the core business.