To get back to the Original Poll Question.
The poll is flawed because it doesn't take into account the method of delivering the message. Given the right sales/ softskills training you can get to get to the more ideal goals without the assumed customer dissatisfaction "cons" that are against that answer.
Some people have these people skills naturally. Those that don't have the natural skills can be taught and learn the communication as "techniques" even if they seem like tricks. You don't need to bring in a speaker to teach a class on it; there are plenty of books out there where you can learn the techniques, as well and lots of in depth study/research into this.
Most big corporations package these up as best practices for their drones to go through before they can work with customers; but of course each individual employee has varying degrees of success. If you've ever happened to be up early enough and gone to an "average" Walmart to view their morning meeting and hear the Walmart songs, you can tell it's not quite as enthusiastic as what happens at corporate or Charter Walmart where everyone is gungho.
Some of the more "techy" call centers, actually implement voice recognition software which can observe the timbre of the customer's voice to guage a customer's satisfaction and advice how the Rep should reply.
Again, in theory this information can be useful, but if used mindlessly by inept drones or the interaction is overly scripted it can make a customer even more angry.