I don't think everybody ought to own a relay. The vast majority of people should purchase service from a reputable service provider, or from multiple ones, or use some of the vast number of still-free relays.

But everybody CAN run their own relay. You are free, it is your choice. Nothing stops that from happening except the fact that it won't actually happen.

But even if it did happen, this is not a terrible outcome.  It is just parallel to everybody running their own website and you running an RSS reader that reads from them all.