But they are making the decision based on lies, misinformation, or sins of omission. Same way people didn't know 60 years ago what was in their cigarettes.
When they knew, millions were already hooked on them, biologically addicted.
This all applies to our food industry,which is actively supported by our government. They lie, they mislabel, they insist on sugar being measured in grams on labels, because they know doing it in teaspoons is much, much worse. They lobby to have things designated natural in such a broad manner that they can label anything natural, if they throw a bot of root or bark into it.
What you are saying I agree with, but we aren't starting from a clean slate, we have decades of lying and misinfo that has already damaged people, and if people want to make an informed decision, it is very difficult to get all the info, and fight through the tangled web the FDA has allowed these companies to get away with.
Yes, eat whatever you want, stay out of my life, I'll stay out of yours. But if you don't know what you are eating, which is just the way they like it, that's my issue.
In the abstract it works, but we need to fix a lot of stuff to get to a clean slate.