Until there is official support for Mac coming from nvidia, I don't think anything will happen.
> the hardware wasn't usable on macOS
This eGPU thing is from a third-party if I understand correctly. I don't see why nvidia would get excited about that. If they cared about the platform, they would have released something already.
The eGPU "thing" should work on anything that supports thunderbolt as it has native support for pcie.