I liked how he got smarter from his failed products at Apple. Decided instead of starting from scratch just use Unix instead and build the GUI on top of that.
The 90's… really strange times when there was a split between "desktops" and "workstations", with different OS's, CPU's and what not!
Well... not really. Basically the PC OSes died and what we are left with is the OSes that were then considered workstation-class, namely derivatives of UNIX (Linux, macOS) and Windows NT.
Similarly now we have a split between ”PCs” and mobile OSes (which are arguably far more ’personal’ than PCs ever were).