If you run an open gateway, people can indeed request content via your gateway unless you have explicitly blacklisted it. But if you run just a node, everythin

If you run an open gateway, people can indeed request content via your gateway unless you have explicitly blacklisted it. But if you run just a node, everything that is on the node is there because either you have added it or you have explicitly requested it. IPFS is not like freenet or other systems that shard data over all participants.