Ok, but do you think JPMS is a better alternative?

Aren't you an IT consultant though? ;-)

I know. OSGi needs to die. I'll quit a job before I subject myself to that level of pain and despair ever again.

  But i have never seen it working properly in
  PROD enterprise application.

FWIW, I have programmed for and deployed OSGi-based enterprise solutions. Karaf[0] was the container using Felix[1] most of the time (Equinox[2] being the other for a brief period). These are/were production systems, so I am curious by what you experienced as "never seen it working properly in PROD ..."

0 - https://karaf.apache.org/

1 - https://felix.apache.org/

2 - https://www.eclipse.org/equinox/

I used to work for a robotics company that made heavy use of OSGi.

We also wrapped OSGi in a services framework we created (and by that, I mean my boss wrote it, and then I added some features and bugfixes later), which we open-sourced.

What's really cool is that the Flow stuff from the article resembles a publish/subscribe library that we wrote and also open-sourced (under the name JFlux, even), which in turn was built on some interfaces that bear a resemblance to the Java 8 functional interfaces, except written for Java 6.

I don't think that this is true: OpenHAB, Nexus 3, a lot of the enterprise application servers... One can probably compile a pretty long list of things "running in production" using OSGi.