Collective change in spending habits can have the power. We're seeing it with rise of veganism & meat/dairy, those producers are very concerned (pushing against naming plant-based foods milk/burgers etc.).

I agree that legislation & policy & subsidies are critical. But this change won't come without support of the public.

It seems to me, that if you want to change something, you have to change yourself first. We can't just wait for somebody to change it. It won't ever happen this way. People have to know & do, then politicians cannot pretend not to know/care and then the change will happen.