In a sense, yes; however, in a federated service, your choice of "walled garden" can (and usually does) talk to the other "walled gardens" that use the same com

In a sense, yes; however, in a federated service, your choice of "walled garden" can (and usually does) talk to the other "walled gardens" that use the same communication protocol, giving you access to a wider range of content than your one instance provides on its own. Also, with federated services, you can typically stand up your own self-hosted instance and fully own your "walls" yourself.