With the context of the previous and subsequent sentences he's saying that "freeloaders" are a subset of those that don't contribute: "the people who sign a business agreement with IBM/Red Hat and then do not want to live up to that agreement".
“Freeloader” here really means someone like the IT guy that occasionally spins up a microservice in a Linux Docker container because that’s what he saw suggested on Reddit, but is otherwise proudly promoting his Microsoft certs on LinkedIn.