I must say, you made a powerful point.
The issue is not lack of ideas or technology, it's like incentives driving everything. We are encouraged to consume things like that make us sick, lonely or stressed while the companies keep profiting twice than the effort they are putting from the harm and the cure. If society rewarded health and clean living we would all benefit. It is somehow crazy that we accept the opposite as "normal".
Remember, we live in a world of body positivity, that has normalised being obese as a healthy choice. And people think they are making their own decisions...