I can speak from the Veterans Affairs perspective.
We obviously have some clients who are not happy with the decisions we take, but again, we are a publicly funded program. We have to be able to make a decision about whether a drug should be provided to every veteran, or whether a drug should be provided to veterans who have a specific need because they've tried other things. To do this work ourselves would cost us a lot, so having the common drug review actually saves us the research work.