There's definitely a similarity, but you've got the causal chain reversed (if there is one). The GEM UI was influenced by the Mac, at least determined judicially. This was the source of the initial "look-and-feel" lawsuit Apple won in the 80s.

> "At this point, Apple Computer sued DRI in what would turn into a long dispute over the "look and feel" of the GEM/1 system, which was an almost direct copy of Macintosh (with some elements bearing a closer resemblance to those in the earlier Lisa, available since January 1983)."

https://en.wikipedia.org/wiki/Graphics_Environment_Manager#G...

It's not surprising, though, given that Lee Lorenzen, formerly of Xerox PARC, wrote much of the code.

Oh interesting, I assumed it was the other way around because of the word "Xerox" in the name.

I can see why they sued...