The company could find absolutely no way to tell the two populations apart prior to administering the pill. Most critically, once the 10% took the pill for a short period of time, they almost always ended up suffering the adverse effects.
Do you think the FDA would approve that pill? Do you think any sane doctor would prescribe that pill to his/her patients?
So absolutely, if you are sure you don't have any alcoholic tendencies (and if you have to ask, you aren't sure), then drink a glass or two of red wine a day (depending on your body mass). It will almost certainly improve your cardiovascular health.
But don't expect medical or public health professionals to go singing its praises from the rooftops to a partially at-risk population.