It is not naive. What is naive is to leave to market to its own devices and assume everything will work themselves out beautifully. You always make a proper an

It is not naive. What is naive is to leave to market to its own devices and assume everything will work themselves out beautifully. You always make a proper analysis and do multiple changes money earned on price increases on one category of foods could be spent to reduce another category of food. You could e.g. tax sugar and junk food and use those earning to subsidize healthier foods , making healthier food more accessible to poor people.