1) Percentage of GDP in social expenditures: http://en.wikipedia.org/wiki/File:Social-expenditures-2001-O... . This correlates with inequality.
2) Corporations in countries like France, Germany, Canada etc. have less relative power than in the US.
3) I don't know, I don't live in the US. But zero regulation of these industries is without question not the best amount of regulation.
As for the last sentence – I think it should be illegal to sell food that causes serious problems.