Jagex is pursuing easy money. Unregulated gambling in a game with addictive characteristics, SoF is a natural match. Is it permanent? No. It's not. Japan RS gold was able to do this in recent times when they controlled their social gaming, which also included some gambling. The game businesses were shut down. Because by that time they weren't concerned about the game, only the money.
If Jagex had asked players about EoC we could have got dual wielding, the skills like emotes, item dropping and then an accelerated growth from there. If there was no such thing. If these things were readily available, the world would be a better place. Jagex is crazy for not asking their players to tell them what they want. It's almost as if they don't have cheap RuneScape gold the power to alter their policies. In this case, the latest research seems to be apt. The End of the Road.