Oh, I agree -- I don't know how to handle the problem either, and since the majority of our cells aren't human, there are plenty more microbiomes waiting to be transplanted (e.g. skin, underarms, feet). The incentives are incredibly perverse, with drug companies wanting to spend as little money as possible to develop drugs that appeal to the richest consumers, e.g. copycat drugs for old men who still want to get it up for their young mistresses.
