Originally I felt the same, though have re-thought the issue as of late. I think it's important that we first solidify the definition of that which we are discussing. The features of a corporation include: 1. a pooling of private resources to create one company, 2. limiting the liability of the owners/investors of this company, and 3. state legitimization.
I see no reason why 1. would either be impossible, nor even undesirable in a free market. For free people to associate and intermingle funds is a completely force-free endeavor, one to which I can raise no objection.
I used to think that 2. and 3. were inextricably linked, and thus both impossible in a free market. However, while it is clear that 3. is right out in a free market, I am less inclined to state factually the same about 2. Limited liability coupled with state legitimization (read monopoly of force) is disgusting and wrong, however it may yet have it's place in a free market.
Let's say in the market for good 'A' there are two competing firms (of many others). Firm 1 offers good 'A' with a full liability package for price=X. Firm 2 offers good 'A' with a limited liability package for price=0.5X. I can hardly find fault with an open and free exchange on the market, yet in this scenario have not the definitions of 1. and 2. been met?
It's clear that corporations and the govenmental monopoly they enjoy today would not exits, but I am starting to believe that at least in some sense the posibility for corporations to exist in some form is still there.
Thoughts?