In the specific case of Leela Zero, there is no NVIDIA lockin whatsoever. Leela Zero uses OpenCL so that people with AMD GPU can use it. Deep learning research

In the specific case of Leela Zero, there is no NVIDIA lockin whatsoever. Leela Zero uses OpenCL so that people with AMD GPU can use it. Deep learning research code can require NVIDIA; end-user game software mostly can't.