Italy too, although in most newer places, they have the roll-down ones -they're fantastic! On the other hand, the idea of mosquito netting hasn't caught on, which is bizarre.
Unfortunately I can't install rolling shutters on my windows because the gap between the top of the window and the roof outcrop is too short, and existing products are just way overpriced anyway since it's such a niche product. Maybe we'll make something ourselves that produces the same effect.
I think exterior rolling shutters and white rooftops are the two most effective changes we can make.
Rolling shutters are great against summer heat, but IMHO their biggest advantage is the ability to let you have a totally dark room for optimal sleep.
They are also really good at preventing thermal leaks during very cold weather, and provide extra protection against storms and hail. Lastly, really good shutters can be locked into window frames to keep thieves away.
I don't understand why they are not more popular. Coupled with mosquito nets, they are a really convenient and energy-efficient all-weather solution.
If you have mosquitos try different brands of mosquito repellant that don't smell that bad. They have been very effective for me. I'm not sure about the health concern of the toxic they produce, however.
Their aim is to avoid sunlight in summer and keep warm in winter.