True, but the question is always: what level of profit is reasonable? A corporation, absent regulation, will charge as much as the market will bear. If they can charge twice as much but only lose a quarter of their customers, they'll do it. Such a situation with something like water would be a disaster. People would die.
They will not charge as much as the market can bear. They will charge as much as they can without competition eating their market share.
There is no regulation for instance on the cost of soda, but it is not priced as high as the market can bear. Soda is incredibly cheap and requires no government interference to be cheap.
We already have this situation going on in the health care industry. Companies will raise prices as long as profits can be increased. A large amount of the US population can't afford to have access to health care anymore.
