Hmm, not sure what’s stopping it from being published - it’s a freely available download from Download and Compatibility and plenty of other organisations publish their freely available but commercial artefacts to a Maven repo (e.g. https://mvnrepository.com/artifact/com.install4j/install4j-runtime/7.0.8).
But if you want everyone to download it and install it manually, I guess that’s the way we have to do.
Greg