30 years ago people were using Interface Builder already. Admittedly not that many, but the drag and drop interface is still there integrated into Xcode.
They were, and had it not been for Apple's reverse acquisition, it wouldn't be there in Xcode today.
My graduation thesis was porting a visualization particles engine from NeXTSTEP/Objective-C/OpenGL into Windows/Visual C++/OpenGL, as the department was seeing the end of NeXT and they wanted to keep the research going on.
My supervisor had a NeXT Cube getting dust on the office corner, waiting to be collected.
