I am now pleased that I live in Sweden when we have got new laws since February 1. Have been forbidden to photograph with drones for a year here.
Today you do not need license to fly either privately or commercially, but you need insurance on commercial flights.
Actually, the only thing about people and their property that we need to keep up with, is that you shall not fly or photograph in an abusive manner.
If any are nude-sunbathing in their backyard, you do retouching and remove the person before the photo is spread.. e.g. and you do not fly closer and violate the person.
The only downside we have is that if pictures or movies are to be posted online or to spread, they must be submitted to the authority for review before. It takes 2-3 days to get answers from them.
It may be a threat to the security of the nation otherwise ...

Think any nations have enough satellite images to get their information anyway.