Well, in most pediatric subspecialties, there is required scholarly activity. Unfortunately, by nature, most people don't want to do research or any sort of scholarly pursuit. If they did, they would need institutional by in and infrastructure to support it and to make it more rigorous. Often that requires financial investment for the institution and additional time from the individual to learn. However, both of those things are costly to both the individual and the institution because there are both opportunity and direct costs to both the individual and the institution. From a strictly business standpoint, it makes sense to generate money in the quickest and most cost-effective manner possible. That means, providing no institutional monetary support to the individual and in turn, the individual providing the least amount of effort to the institution. The net result is a generation of "just-qualified enough" physicians at the completion of training.
However, as was stated in Simone's Maxims number 1 and 2, the institution doesn't love you back AND has a much longer time scale for both direct and opportunity cost. At the end of the day, it’s a very slow machine designed, above all other things, to generate money for itself. Now, if the institution generates "just-qualified enough" physicians, it starts to realize that the difference between just-qualified enough physicians is similar to just-qualified enough APRNs. They both can follow the same CPG. The both can be told to order less labs. They both can be given the right text to get the maximum return on a DRG. All of those things generate the exact same revenue for the institution. In fact that skill set becomes so close, that it becomes unnecessary to pay someone more to do essentially the same thing, as the institution would rather pocket the difference, usually to build more infrastructure to repeat the same process. These also result in Maxims numbers 3 and 4, which is exactly how the first paragraph came to be in the first place and the cycle perpetuates till the wheels come off. Though again, for the institution, the wheels never really come off.