the 2 animal organizations mentioned above work very hard to solve the problem of the strays. In addition there are other individuals and organizations working on the animals' behalf. A lot of people volunteer to do what they can.
The situation is much better than it used to be.
In addition, many of our strays...we call them coconut retrievers..are adopted and taken to the USA.
It is a drop in the bucket but at least people are trying.