Ethics of food industry

Now we know that every business is out to make a quick buck. So can we really blame them for creating foods that are:

• Excessively fattening?
  
  
• Excessively sugary?
  
  
• Excessively fortified?

In the end we are the controllers of our destiny when it comes to food, but one must wonder should one use these tendencies of the human palate to such a point that it can cause serious damage to the individual?

Some sort of self-policing perhaps? Or is that a failure of our social system where we can't discipline ourselves?