I think you're wrong about the food industry not slowly harming people, for two reasons.

1) For "unhealthy" food (i.e. not something that's acutely poisonous) the link between ingestion and harm is in the long-term; it would be very difficult to blame harm on a particular group of foods, let alone a specific product. Maybe in a couple of decades there will be hand-wringing and governmental investigations, but in the short term, there's no negative incentive for food companies.

2) Most executives are directly incentivised to think in the short term - this bonus cycle, this year's results, the two-three years until LTIs vest, or a next promotion or change of job. Short of something catastrophic, there will almost never be a comeback for those individuals, meaning they have all of the positive incentives to chase profit, and it's very unlikely that they'll ever personally experience anything negative from their decisions.

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Also, I don't really want to engage with quasi-conspiracy theories, but if you think that pharma companies have a hand in influencing dietary advice to be unhealthy so they can sell more drugs, IME you're vastly overestimating the competence of the pharma industry.