There are tradeoffs. My guess is that very few people will bother to abuse the drugs that can't get you high, relative to the benefits of increased accessibility.
You are already on the slippery slope if you allow public "ask your doctor about" advertisements for anything more substantial than mild painkillers or flu symptom remedies.
This type of aggressive drug ads is pretty much unique to the US. It's your MD's job to stay up to date with drug developments and prescribe what would work for you.
Being able to go from "Ask your doctor about..." to "Try..." is a major shift.