every time I read mortality my head would switch it to morality...annoying

This system where a drug company can choose to market a drug either as an essential drug for the public good or nonessential drug for the private market makes this system a very interesting one. It allows for drug companies to increase their profits by being able to work towards creating drugs that before would have not produced any where near enough money to cover the cost of development. Pharmaceuticals can make money on these drugs by labeling them as essential drugs which in turn will be sold for just above marginal cost or perhaps even less than marginal cost because the tab will be picked up by the wealthiest nations rather than by those in need of the medications. Yet, companies would still be able to sell the drugs that bring in the real money like Viagra and what not at the premiums they currently enjoy. This will allow the research field to increase which will offer more jobs in the developed world by allowing for more pharmacists in high paying research positions that would have previously been not worth the time. The cost this puts on the developed world Pogge argues would in the end not really be more than these countries already pay in relief aid, loans that never get paid back, and also reduce the chance of pandemics because diseases like SARS that started in poorer parts of poor countries would not have gone untreated until it made it's way into the developed world. All of this and we haven't even hit the ethical bonuses yet, I am rather impressed with this plan.
As far as the ethical bonuses go we would be eliminating the balancing act pharmaceuticals do between saving lives and making money by allowing them to do both. The developing world would also be able to build up moral credit by their paying for the drugs that will help eliminate some of the conditions that kill the poorest people on earth. Even if that is not enough for you, another bonus on the moral side is that you will be creating a healthy population of the worlds poorest which means they will be able to work more because they are not sick all the time. This may make it possible for some of them to achieve a level of existence where they can procure the basic needs for existence. This will be working to help eliminate severe poverty and also lesson the burden on governments to spend funds continually treating symptoms of the problems because they are unable to address the underlying causes of their lacking workforce.