The whole reason Proton came into existence is because of very efficient translation layers from DirectX to Vulkan, DXVK and VKD3D. WINE was compatible and perf

The whole reason Proton came into existence is because of very efficient translation layers from DirectX to Vulkan, DXVK and VKD3D. WINE was compatible and performant before the Vulkan translation layers but lacked modern DirectX version support to make it viable for gaming. So without Vulkan support from Apple, Proton is not really transferrable at all.