They don't gain control. It doesn't matter if you get zapped a trillion times. You can't control everything or really anything other than what's on your relay or what you see on your client.
Discussion
Now, if you have someone that's popular, then, sure, they can influence things and maybe get something hinky done, but... It's hard to do that with the NOSTR protocol.
In the long-term, wouldn't that just lead it to a more subsidized format of the protocol?
It could, and in some ways it is, with grant money flowing in from big names. But, if anyone has the skills, they can make their own stuff to work. That's the power of a protocol vs. a platform.