Yes that's the problem. It seems to be pretty common in developed countries. But such a simple thing is not common at all in this part of the world. That's why I think there is so much to do for entrepreneurs in this part of the world
I don't know how expensive they are here, but I'd be surprised if they were very expensive. Maybe someone else has actual data.
In that case the entrepreneurial challenge is to bring the cost down enough that people will see gutter guards as worth buying.