If it is at all acurate there was a film for cable called “Pirates of Silicon Valley” In this story of Bill Gates and Steve Jobs you see that really the
idea for windows was iniated by Xerox. At the time a power house corporation. Steve Jobs was allowed to study there prototype for a user friendly interface which was the infantile stage of the windows type desktops we use today.
Apple then developed their own OS which of course not named windows but it is the model that Microsoft used to develope their Windows OS.
The point is where do you draw the line? Where does the learning stop and the plagerism begin?
I think the idea is noble but today it is really complicated. Adobe has won a law suit against macromedia for what it says is their patent on tear off layers.