So the gatekeeper is the system keeping us from Justice - mostly money, but also other less tangible barriers. In theory, everyone gets a lawyer, in practice some people can afford expensive ones.
Then the end twist got me confused.
Something about how we want to understand The Law, capital letters, but then there's only systems we make ourselves and understand ourselves would feel properly Kafka, I suppose. But you think that would be mapped to journeying towards some kind of Law?
I think it is very deliberately written to be impossible to "understand". If you think you have found its clear and unambiguous meaning, you're wrong.