It only seems that way because angry customers are more vocal. I can say for certain that the new Share Everything plans actually are saving more people money than it is costing more. Seriously, by a lot.
Really, the only ones it's costing more for is families who have more basic phones than smart phones. But that scenario is becoming incredibly rare now and those customers are allowed to keep their old plans anyway. I have customers who are saving upwards of $180 a month. Plus gaining the comfort of not having to count minutes or texts, and being able to share a large bucket of data however they want.