Really makes me wonder what the angle here is for them. With open source, I can somewhat understand given market standards become easier to hire for and you get feedback on your tooling. It seems unlikely that either will be true for open-weight models. It also seems unlikely they would be able to establish market domination and then increase prices if everything remains open.
In all three cases, they own hardware (Apple in a slightly different sense) that they'd love for you to pay to run your favorite models on, open or closed.