While voting with your wallet and trying to be a conscientious consumer is great, the asymmetry between ad=hoc networks of consumers pursuing smarter more sustainable choices and people who are directly invested in selling crap fora quick buck is huge. Since the large industrial concerns can spend a fortune on advertising and demand creation how exactly are you going to 'force their hand'? So far evidence suggests they often just create an additional line of healthier-seeming products at a higher price point that can be marketed to your demographic segment.
Surely you have noticed that there are also people who systematically attempt to undermine such public education efforts. I think you might at least acknowledge their existence and the existence of advertising that attempts to bypass educational channels to sell crappy foods.
For example, If we as a society would stop buying cheap food, it would force the hand of these industrial operations to change their behavior.
So I'm taking the time I have now to learn and improve my mentoring and educational skills when working with the local community. In addition to regulation, I also think it's critical that sustainable change occurs from our within society.