You think there is only one think tank for any given area of policy research? There are centrist, right, left, up, down, and 4 dimensional think tanks. Name an ideology, and there will be a think tank out there that represents it. That's the best part of academia, even though we will argue vehemently with one another over the nuances of policy and the best approaches, we respect each other's viewpoints and gladly look over research from one another. I personally can't stand William Kristol, doesn't mean I don't read his policy stances/arguments so I can understand how he thinks and how that ideology is approaching a certain policy issue.
Most policy decisions are never purely of any one kind of ideology, they come after an exhaustive level of inter collaboration to come to a solution that best fits it. Libertarians would want the US economic policy to focus on the abolition of all tarrifs, but the left leaning groups would want to protect domestic agricultural and industrial interests, hence there is compromise.
Academia is all about compromise and finding the best fit. It's not about getting up to a podium and beating it with your shoe like Nikita Khrushchev until someone's is buried in the ground. Most people don't understand that.