KPUKE, I think you are confusing free market with freedom. If I were to follow your argument, it could make the point that Capitalism can actually suppress freedom.
You have to read the Preamble and the Constitution to understand what is being meant. First of all the Preamble is a synopsis of the fundamental reason and guiding principles of the Constitution. It is an outline of the rights of ALL PEOPLE IN THE USA (even non-citizens on US soil are protected by the Constitution) and evidence of the founding fathers intentions. It doesn't speak of Capitalism. Nor does it speak of Capitalism anywhere in the Constitution or the Declaration of Independence.
We the People of the United States,
(The Constitution derives its sovereignty from the people and that the government under the Constitution was intended to protect "the people" directly, as one society.) in Order to form a more perfect Union, establish Justice, insure domestic Tranquility
(One of the main goals of the Convention, then, was to ensure the federal government had powers to squash rebellion and to smooth tensions between states.), provide for the common defence,[1] promote the general Welfare
(welfare n. 1. health, happiness, or prosperity; well-being), and secure the Blessings of Liberty
(the liberties OR FREEDOMS are listed in the Constitution and the Declaration: speech; assembly; innocent until proven guilty; speedy trial by jury; own and freely use property; travel at will; worship at will; justice; patents and copyright; representative government; governed with the consent of the governed; free press; keep and bear arms; secure in person, house, papers, and effects; no double jeopardy; due process; freely elect representatives to ourselves and our Posterity
(n. 1. Future generations. 2. All of a person's descendants), do ordain
(ordain v. 2. To order by or as if by decree)and establish this Constitution for the United States of America.
You should read these documents, they are truely beautiful.
A further note: The Preamble of the Constitution of the United States lists six ends to which the Constitution is addressed: union, justice, domestic tranquility, defense, general welfare, and liberty. The last is presented most fully, to whit, "secure the blessings of liberty to ourselves and our posterity." Taken together, those six define the ends of republican government. To best achieve those ends the American founders recognized that simple republicanism was not enough, that what was required was a compound republic, what we today call a federal system.