IPs don’t shift as rapidly as you think. Usually nodes go down/up based on if for example the owner is awake.
People that want to build lists can ignore nodes they already saw in the last 6-24h. And they would have a lot of $$$.
After negative reviews start rolling in more people would shut down their nodes. Each node they can find and make life hell for is another node that they won’t have to worry paying again.
