Aggiungo l’interessante e ben fatto articolo che si pone più o meno la mia stessa domanda e tenta di dare una risposta.
Jini: Out of the Bottle and Into the Box by Daniel H. Steinberg
What if a Jini lookup service was available in every shipping JVM? Not just for enterprise applications – where Jini is a natural fit – but also in every J2SE and J2ME distribution. Jini is Java’s secret weapon. It is so secret, however, that other technologies have been invented and adopted to solve problems that Jini already addresses.