Is Blender 3D (the opensource 3D solution) being used professionally in broadcast environments? Yes.
Below are TV commercials created and rendered entirely within Blender. They are made by ProMotion for Bridgestone Australia. For the work, they actually used a custom-built version of Blender that incorporated image-based lighting. Blender’s compositing nodes were intensively used too. ProMotion is an Australian-based (Sydney) studio.