[Lio]

Well a computer with enough GPU performance to work with VR would be a nice start. Apple don't currently have anything available other than hacking an eGPU set up together.

The "current" Mac Pro is over 3 (4?) years old now. Users can't upgrade it because of the proprietary GPU cards and Apple don't seem able to keep it relevant themselves.

It's difficult to have a professional relationship with a supplier where the best options for macOS are either a dodgy Hackintosh or a used 2012 Mac Pro with a new GPU.

[nilkn]

VR is a subset of PC gaming right now, and Apple has never offered hardware sufficient for high-end PC gaming.

[toyg]

GPU nowadays is almost a misnomer. They are more like supercharged versions of the old "floating-point calculation" chips. As such, they have plenty of applications beyond VR - bitcoin, data analysis, encryption etc etc etc.

[intoverflow2]

GPUs are for more than VR. All 3D rendering is moving to GPUs, All machine learning development needs GPUs.

GPU is the future of professional computing in many emerging sectors. Apple currently ships no hardware compatible with any of this.