Your comment doesn't seem to have anything to do with the actual story. What gives?
> They didn't even try to go the Open Source route
No. It's not their code, and it's very very old, mostly written in language such as BLISS that nobody can read any more.
There's really not much point. Look, here is a modern 21st century OS in C++ with a host of 3rd party apps, a WWW browser, IPv6, realtime SMP and more.
So, the famed OS should die a fanglorious but inglorious death.