Of course the software license is not related directly with privacy and access control. But there is no way that a private company will be able to offer a global social network while keeping user privacy a priority. The moment that any single company becomes big enough, they will either exploit the data for their own benefit (like Google/Apple/Meta/Microsoft/Amazon) or they will be pushed into it by some government.

Our best alternative is to have not to trust any particular company, but to use federated/distributed services, and the easiest way to have that is by ensuring that we are supporting and adopting open standards and open source systems that can be hosted by many different players.