You are making the assumption that "investing billions of dollars" is synonymous with all other forms of justice. During the Junta in Chile for example, you were very safe to invest. You were probably even safe to go for a drive. But the system was grotesque on the whole. I think the point people are trying to make is that

1) It varies far too much from country to country to generalize in this way.

2) Justice is patchy and even across many areas of law depending on where you are.