While not entirely surprising, the nation's two largest wireless carriers took in the lion's share of net wireless subscriber additions in the fourth quarter, according to a new report from Wireless Intelligence. The two operators accounted for more than 80 percent of the total net wireless subscriber additions in the quarter, which came in at around 5.9 million. According to the research firm, that's the highest number of net adds in any three-month period in three years. "The remaining operators continue to feel the squeeze outside of the device exclusivity and coverage available from AT&T/Verizon in the contract market and the 'unlimited' offerings from the likes of Straight Talk in the prepaid segment," Wireless Intelligence analyst Jon Groves said in the report. Article, article.