If you're doing it enough that others interfere? You're going to lose all value in your instance as users leave and go elsewhere. You just wasted money on something you could have accomplished for a lot less, (and at least when that fails, you can do it again elsewhere).

You're better off just creating your own instance and posting elsewhere and changing your domain when defederated too much. Much cheaper, more effective, and much more reach.

Edit: I'm really disliking that all these conspiracy theories are forcing me to think of much less expensive ways for corporations to exploit the fediverse. That it hasn't happened is likely a sign the fediverse just isn't a big enough target as a whole or simply that they'd have no way to track the effectiveness.