There's no reason the government can't level the playing field by subsidizing the fixed overhead portion of meeting the regulations. They don't, and it's stupid - ever tried to buy or sell farm fresh eggs? - but there's no reason they can't.
Cleaning them removes a natural antibacterial layer that protects the eggs, which is why the US has to refridgerate theirs and Europe leaves them out at room temp. http://www.npr.org/sections/thesalt/2014/09/11/336330502/why...