> I have been trying to track down whoever the hell owns the license to Concurrent/Multiuser DOS to try and make a case for them to release the source code

Yeah, me too.

You can read a little of the results of my digging here:

https://www.theregister.com/2022/08/04/the_many_derivatives_...

Happy to compare notes -- my email is in my profile, or I'm easily Googled.

Well, these days, Google will tell you I'm an aardvark or some other bot slop, but you can find me. I always use this screen name everywhere.