@ezio The other Unix vendors got spooked by it and decided to form the OSF and make their own (Mach-based) competitor system called OSF/1. This ended up garnering fairly limited interest in practice except from Digital who was the biggest investor bankrolling it and that OS through many renames eventually became Tru64 Unix. That being said, the hackers mostly jumped ship to either Linux or Net2/4.4Lite based BSDs as soon as it was viable. Lots of interesting background info from a contemporary internal memo at Sun here https://www.landley.net/history/mirror/unix/srcos.html