When they don't get the code upstream, it's usually because they know the code doesn't pass the stringent requirements for upstreaming and don't want to get emb

When they don't get the code upstream, it's usually because they know the code doesn't pass the stringent requirements for upstreaming and don't want to get embarrassed during review. What you do get in that case is code dumps from those companies so someone interested at the very least does not have to reverse engineer the driver to rewrite it and get it accepted upstream.