this never works long-term.
Anyway, my thoughts about wilderness activity:
Back in the days when wildy was active, private servers existed because rs pking was removed. Nowadays you can just play the official private server (osrs). Add to this that most players are pvm bots and don't care about pking. The playerbase simply has changed, you can't force people into this mold. It is sad but it is what it is. You can keep trying to artificially keeping this thing alive if you want, but it's never going to thrive unless they manage to make a truly Great rsps with a proper wilderness economy, a kind of "circle of life" figuratively.