However, although Mac users can use AMD graphics cards in an eGPU connected to their Mac, NVIDIA graphics cards – which are very popular for gaming and VR – are not supported by macOS
This is partly due to rivalry between NVIDIA and Apple as NVIDIA is trying to promote its own gaming platform GeForce Now on Mac.
It also hasn’t helped that Apple dropped support for 32-bit games on Steam with the release of macOS Catalina and has not subscribed to standards such as OpenGL and Vulkan for gaming.
Valve’s decision to drop SteamVR gaming support on Mac is not a huge surprise considering the lack of VR games published for Mac and the fact that Mac users only comprise around less than 5% of Steam’s users.
Steam will continue to support VR gaming on Windows and Linux however.
As eGPUs come down in price and as new Macs are released over the next few years that can handle VR technology out of the box, it’s possible that Steam will once again support VR games for Macs.
It’s also very likely that Apple will eventually launch it’s own VR gaming platform possibly as part of Apple Arcade or the Mac App Store.