Yeah, yeah, parrot the line and then please explain how?
Extending means making extra functionality that others haven't implemented, so that your offering is more attractive. You use it to build a walled garden. Defederation just skips that step and does it for them. They don't even have to extend.
You missed the point of my comment. I don't need to explain how, I'm sure they've got brilliant engineers working hard on it. This is just how capitalism works, Meta isn't a benevolent force here, their ultimate goal is to make money off users and their data.
I don't need to figure out exactly how they will do it to know that they will.
I'm not saying it's different. I'm saying that the current plan in no achieves the goal of keeping the fediverse open and out of the control of large corporations.
If you want to know how to prevent them from taking control, you better start working out the specifics of how they will do that. Otherwise your actions may end up helping them.
No one seems to have considered the possibility that Facebook are well aware of what people think of them. That they looked at the technology and thought "we don't have to do anything, those idiots hate us so much they will do the job for us and give us the private marketplace we desire"