It's convenient in this case that the first five characters of your handle express my response to your assertion. (That was just for fun, BTW). Actual response below.

The entity you described (the one that makes stuff we all need) is a BUSINESS, which may or may not be (although I suppose most manufacturers are) a corporation. The incentive to incorporate is to enjoy the benefits of a corporate tax structure, which translates fairly directly to higher profits. It's not the desire to maximize profits that disturbs me (although there is often quite a bit of evil involved in that process). Rather, it's the extreme social costs at which that goal is realized. If you view short-term profit and shutting out competition as the measures of good business, the corporate model is right up your alley. If you value the principles on which this country was founded, you will realize that corporations are becoming to our current society what British royalty was to the colonists.