I really do not think that enabling HFCS or sugar is the problem. If there were more of a demand for drinks that are not sweet, there would be more of them. The soft drink industry has other ideas.
I am a diabetic. Drinking sweet drinks is not a good thing for me because the sugar is so rapidly absorbed. As a matter of fact, I am told to not drink sugary stuff at all, whether is is soda, juice or whatever.
So I go into the typical convenience store thirsty and try to find something to drink. I do not drink artificially sweetened stuff. It tastes icky and there is evidence that the sweet taste alone stimulates the sugar cycle. I look at the shelves and can't even find unsweetened iced tea. There are a couple of brands of it that are good, but stores just don't carry them. Out of the typical 12 foot long by 5 or 6 rows high drink case, I have the choice of water.
There must be a way.
In the meantime, the best strategy for me is to keep two or three bottels of water cold in the fridge and take them with me when I go out.
Finding a restroom to deal with the results a diabetic faces after drinking anything is another post.