This entire conspiracy theory falls apart once you realize there is more than one group trying to cure cancer, and have cured multiple cancers, as curing cancer is vastly more profitable than treating it.

Once your cancer is cured, you no longer need treatment, and you won't seek treatment if there's a cure.

Cancer cures (and eventually, vaccinations) are an arms race, and only efficacy matters

Companies burn food to ensure scarcity and protect their bottom line.

We're stupid