I'm sure you can see that 2/5 (approaching half) of the Direct3D 12 titles were published by Microsoft themselves. And actually, by the numbers there are more

I'm sure you can see that 2/5 (approaching half) of the Direct3D 12 titles were published by Microsoft themselves. And actually, by the numbers there are more titles on Vulkan than there are titles not released by Microsoft on D3D12.