Ok let me simplify things for you. Lets say you spent a billion dollars developing effective solar cells and after years of work, finally had a marketable product. Upon your release of your product, you are selling it at a price much higher than the manufacturing cost (because you're a billion dollars in the whole). Then some other person comes along, copies your product, and starts selling it at a much lower price "for the benefit of the world." You lose any method to recoup your development costs, and as such, go out of business.Nailz said:snip
The problem extends further than just you however. Other potential inventors, upon seeing your years of hard work and massive amount of money lead to nothing, decide "What's the point?"
In so doing, you've effectively stifled innovation because you've removed any incentive.
The fact that pharmaceutical companies make massive amounts of money is irrelevant. They own the rights to the drugs and when you remove those, they lose the ability to recoup their loses in research, which amount to ~$8 billion per year. It's not for you to decide how they sell their product.
(On a side note, although your figure is true, it is incredibly misleading. Much more important to quote is it's profit margin, which is much smaller at $8 billion.)