Yes there will always be some people who will refuse to give up their cigarettes, drugs, booze or junk foods. But it's not impossible to make foods more healthy and convenient. Ice cream could have less sugar, but the low-fat ice cream sells because it's more addictive and people have been mislead into believing low-fat food makes your more healthy. Sausage doesn't need corn syrup to be less expensive. Dry roasted salted nuts don't need to have added sweeteners to taste good. I'm sure there must be an inexpensive way to make sandwich bread without added sugar/HFCS. Sugarless peanut butter wouldn't be more expensive than regular peanut butter if it was available in every store and more people bought it.

It takes years to figure out which foods are less harmful, and the grocery stores' rotating items, changing product mix or putting the sugar crap on sale while making my favorite healthy items more expensive doesn't help. Often the more healthy foods I'm aware of are sold out.
Our fight with the food giants is real: Extra sodium in soft drinks causes people to get thirsty and drink more. Having less sodium doesn't cost more. Low-fat health foods people to eat more calories than if eating the classic recipe that has more fat and less sugar. The old fashioned recipe shouldn't cost more. Lately, a lot of natural juice and smoothie-type foods seem to be healthy yet are less healthy because the fiber lattice is destroyed in effort to get people to drink more - many people don't know that. Ordinary whole milk doesn't cost more than the adulterated flavored milks kids are getting addicted to. I really wonder if every loaf of sandwich bread at the grocery store has added sugar/HFCS. Wouldn't it cost less if they just leave the sugar out? I checked many packages of frozen sausage and every one had added sugar, so I left without any sausage. If people believe healthy convenient food is impossible, most people will decide to go ahead and take the junk food and become a food addict.