One of the staff forked it into a community edition https://github.com/gpui-ce/gpui-ce
Does anyone have more details about the state of it?
In case you find it useful, I recently stumbled upon this project:
https://github.com/longbridge/gpui-component
"UI components for building fantastic desktop applications using GPUI."
https://zed.dev/blog/videogame#text-rendering
It looks like their approach could nicely solve a problem that's shared by almost every new GUI toolkit I've tried: text looks terrible, or at least out of place when surrounded by applications built with the desktop's native toolkit.