Yes they did, it is called Metal Compute, and everyone using Apple devices has to use it.
Vulkan you say?
It is only relevant on GNU/Linux and Android, because Google is pushing it, and still most folks still keep using OpenGL ES, no one else cares about it, and already turned into the same spaghetti mess as OpenGL, to the point that there was a roadmap talk at Vulkanised 2025 on how to sort things out.
NVidia and AMD keep designing their cards with Microsoft for DirectX first, and Vulkan, eventually.
Vulkan you say?
It is only relevant on GNU/Linux and Android, because Google is pushing it, and still most folks still keep using OpenGL ES, no one else cares about it, and already turned into the same spaghetti mess as OpenGL, to the point that there was a roadmap talk at Vulkanised 2025 on how to sort things out.
NVidia and AMD keep designing their cards with Microsoft for DirectX first, and Vulkan, eventually.