Vulkan seemes to be caught in a bad situation since it's not usable on Mac or iOS. With OpenGL at least all major platforms where covered.
That is a misconception, game consoles never fully supported OpenGL.
The PS3 was the exception with Open GL ES 1.0 + NVidias Cg for shaders, most developers just cared about Sony's own APIs anyway.
What they have are APIs, that to certain extent follow OpenGL concepts.