Capitalism is based on voluntary exchange. There is a fundamental misunderstanding of the nature of the state and often an assumption is made that the corporatist nature of our government is somehow representative of capitalism. Its not. The 17th and 18th centuries saw a separation of church and state. If we are to survive, the 21st and 22nd centuries will need to be about the separation of economics and state.
To give the government any power to control economics is to give any corporation the power to control your economic freedom, since all they needs do is to purchase some politicians. And so long as the government holds any power over anything, there will always be those corrupt enough to run for office and sell access to those powers to the highest bidder. You have only to look to most any Democrat or Republican who has been in office, and out of every 50, you may find 3 or 4 honest men and women. The rest... All for sale, to the last man.
No matter how good the intentions are, when the government is given power over a section of the economy, or corporations, it then becomes inevitable that after a period of years some corporation will come to control that power by simply funding the campaign of a politician in exchange for access to the power of legislation. Any power that is given to the government, will inevitably end up in the hands of corporations. The only solution is to lessen the power of the government as a whole, so that corporations must compete fairly in the free market and the people will decide for themselves which corporations to reward with their money through fair exchanges for goods and services.