Here is a link to a paper written by Microsoft on their next generation graphics system GDI+. I also talks a bit about 3D user interfaces. . I tried the email address at the bottom of the paper, but it just bounces now.
What did they get wrong? They thought Shared Memory Architectures for graphics would be where it is at (I think they saw SGI doing this). This just didn’t happen. The GPU systems diverged further and advanced independently and significantly.