In theory, governments should do something. But they won't. a) food businesses lobbying b) big pharma lobbying (diabetes medicine alone is worth US $100bn annually) c) all other companies make more from fatties (more gas, more clothes more often etc) d) socialised healthcare will end and be privatised (see b) e) they are fat themselves (and even studies show voters allegedly prefer fat politicians) f) they will never risk losing votes by "fat shaming" the electorate g) they just don't give a shit about helping the next generation or education standards because a dumb populace is less likely to question, rebel or disturb the ruling political and financial elite. So, we can hope, but I doubt anything will happen, too many vested interests and too many obese politicians at the troughs. Quite literally in some countries.