Assume you are considering open-sourcing a large service of your internal enterprise infrastructure. Let's say you have the resources required to ensure the minimal requirements are met: the licenses are sorted out, profanities removed, security audits conducted and all known security vulnerabilities fixed. Assume your company doing the open-sourcing has a very recognized and valued global brand.
Does it make sense to open-source such service by just dumping the files? I am assuming here it won't even be possible to run the service as-is, because it will have dependencies on other, not open-sourced systems.
If not, what would be the minimal effort required to make open-sourcing worthwhile?
Reasons NOT to open source not-for-profit code?
The reason to make some code open source
Is it OK to push my code to GitHub while it is still in early development?
Checklist for starting an open-source project