There are a finite number of useful small molecules you can use as drugs. If it's costing 3-12 billion to find new ones and even then we are failing we may be at a point where it's time to 'give up' on our existing approach. As an upside we can remove a significant slice of our spiraling healthcare costs. We can also remove a lot of drug related advertizing that has dubious healthcare benefits. Unfortunately, that also means antibiotics are going to become infective in the not to distance future.

On the net I don't think this is a good thing, but it should free up a lot of vary intelligent people to work on other lines of research. Hopefully, we may eventual start to develop the tools to build direct DNA specific medicines on the fly by using the fruits of those other lines of research.