There is technically no such thing as a free market. We are always putting boundaries, constraints, and social contracts upon it. For example, both child labor and slavery are now illegal (although we do have more slaves and child laborers than at any other point in history). These constraints act as a moral compass and, hypothetically, make the market work more effectively. The free market does spur innovation, create jobs, and provides a significant amount of value. However, the current free-market structure is very poor at taking environmental and social factors into consideration, and this is causing us to exceed the carrying capacity of the planet, both from an environmental and geopolitical standpoint (resource constraints are causing or exacerbating civil unrest around the world). I absolutely agree in free-market principles, if and when that market has proper and effective boundaries that seek to maximize value for the largest amount of people possible and not at the same time cause significant environmental or social challenges. I do not believe we currently exist in that kind of free-market structure, and I think none of the candidates, with the possible exception of Bernie, presented any kind of vision for a free market that works in this manner.