"So it is" is a way Caribbean people describe something which happens which shouldnt happen, but just does. In many ways it reflects a sense of powerlessness.
I travel around the region often and "So it is" happens alot. The main reason it does is because people generally have little confidence in themselves or in the way of the 'right'. Quite simply that they have seen the way of the wrong dominate and even prosper. In small Dominica, many of the current land owners literally stole their land from other people.The ironic thing is that people will clearly make the link to crookery and consider that a normality.
What we then have is a personality contest which judges not the morality of acts committed but of who did. 'So it is'.