Total corruption is a 21st century disaster in all countries. And I'm already 100% convinced that as the president manages the country and officials work. It is not necessary to think that the Philippines, at home, as elsewhere.
Previously, corruption was a major issue even in the developed nations. But now, it is quite rare in these nations. The same can happen in the Philippines as well. As the country prospers and the people get more educated, the corruption will vanish.