I'm not concerned. The discussions and comments in the press are motivated by commercial strategy and politicking.
This is IDCC we are talking about. Little Ol' IDCC, who not long ago was just a small-cap company that nobody gave a crap about. And even now, IDCC is barely a mid cap, who controls but a mere 10%-20% of IPR for LTE. And that is a best case number.
So from my P.O.V., it's a silly notion. As long as Qualcomm and other major IPR owners exist independently (like Nokia, Ericsson, Samsung, etc.), IDCC is not going to be a weapon that will stifle competition. No matter who owns that weapon. Besides, anyone who makes a bid can argue that the acquisition will bolster their cross-licensing position as well as protect them against litigation.
Defensive patents do not create anti-competition issues.