^Z in DOS was a holdover from its roots as a CP/M clone. CP/M in turn cribbed it from certain DEC OSes, because that's what Gary Kildall used while making CP/M. So ^Z is a case of convergent evolution.
I have the books for Harlequin Dylan, but the language never got traction.
It was basically an infix lisp with focus on hygiene (because it was basically a Lisp 1), and the possibility of sealing modules (making it impossible to alter / inherit from them ).
GPL fans said the great problem we would face is that companies would take our BSD code, modify it, and not give back.
"Nope—the great problem we face is that people would wrap the GPL around our code, and lock us out in the same way that these supposed companies would lock us out.
Just like the Linux community, we have many companies giving us code back, all the time. But once the code is GPL'd, we cannot get it back."
— Theo de Raadt, from https://en.wikipedia.org/wiki/Theo_de_Raadt
