Wow... i've grown used to cynicism and ignorance on the internet... but I've got to say your post is really quite depressing. Your post has a combination of cynicism, ignorance, and intelligence all at the same time and it's sad to see.
"Milk is good for you" is you repeating an advertisement. It has calcium yes, but it's also a high fat drink and it's health benefits are debatable. But I agree with your main premiss that corporations sponsoring PSAs are not intrinsically bad, except that it can lead to slanting of the truth to benefit said corporation. It most cases if you allow this, the corporation will just turn the PSA into an advertisement designed to sell their product. If some unbiased group controls what "truth" is told, then it's cool, but if the corporation controls this "truth", then we're in trouble.
Corporations are not your friend. Corporations are tools and they see you as a tool, "a resource". Each resource should be replaceable with another resource. People are only useful as long as they provide labor. The environment has little value. Profits are everything. Fairness, ethics, loyalty, responsibility are not expected or desired. Corporations are sociopaths by nature. This is the way they are designed. However... if properly harnessed with regulations to prevent abuses (such as not dumping toxic waste in their own back yard), and properly put into direct competition with other such corporations, they can produce benefit for all society.
The idea that "many decisions of the government being based upon what corporations want is not entirely a bad thing" is mind bogglingly stupid. If allowed corporations will make laws that only benefit themselves. They will push as many expenses away from themselves and toward citizens. They will capture regulators so they don't have to play fair. They will make laws so they don't have to pay for what they use, put in safety features, or properly dispose of waste. They will create monopolies. They will give themselves tax breaks, tax advantages, and make decisions that are only beneficial to the people in control of the corporation (these people are known as the top 1%). Their only goal is to make money.
As I said, corporations are sociopaths, so while they do good a lot of the time, you don't want to turn your backs to them and leave sharp objects lying around, and then tell them they can't do something. Government needs to be controlled by the people because that is our defense against and our control over the corporations that already control so much of our lives.
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