It is not fundamentally different from for example MS Office being a large binary blob. We don't have the source code, it is proprietary, and a company controls

It is not fundamentally different from for example MS Office being a large binary blob. We don't have the source code, it is proprietary, and a company controls it. At the same time, a group of guys trained a model that plays go, it can beat AlphaGo, and it probably is the strongest go player ever. No one from the group of people could have created LeelaZero by themselves alone, but collaboration is possible.