Right now the fediverse is nipping at the heels of the silos.
They know we are here, and they perceive us as a threat. We know this from leaked emails from facebook.
That said, they could attack us in an oblique manner with any number of poisoned waterhole attacks.
Earlier today someone predicted one or more of those platforms just integrate activitypub and crush us by incorporating us.
Another pointed at the potential for procedurally generated instances that just harvest data, or overwhelm our ability to suspend all of the instances they throw up.
When these attacks are adapted to... they'll get concerned, and will try to frame us as part of "the dark web(tm)"...
That's how we'll know we're winning.