I do not take issue with the approach to talking during davening as a disruption to the tzibbur, a descreation to the kedushas hamakom, etc. Sadly, the focus on these very real aspects of the problem of talking in shul has not been completely successful in stopping it.
I propose a different focus (not to eliminate the above mentioned ones). My perception is that the talkers are erring seriously in not davening. One needs to recognize that tefiloh betzibbur is a privilege, that we can have a minyan to beseech the Creator of the world to grant us His blessings. We are invited to this unique gift, to speak directly to Him three times a day. Why would anyone want to waste such a precious opportunity? The issue with the talkers is more than the talking – it is the not davening. If we truly recognized the invaluable gift of tefiloh, we would cherish every minute of it, and not replace it with the foolishness of schmoozing that we can just as easily have at another time and place.