Um....I think you will find it more to do with safety as opposed to the country you are flying to!!!!
After all....if the plane suddenly smashes into the runway, the last thing the crew need to be doing is faffing around trying to open window blinds just to see if it is safe to evacuate the passengers!!!! However my airline only requires us to have the window blinds immediately adjacent to the emergency exits open. After that its up to the punter!