You haven't been able to add anything to this discussion from the start. We don't have the power to change anything either because banning the sale of accounts will change absolutely nothing, but for some reason you are unable or unwilling to grasp this. How can you not comprehend this? Please tell me what good it would actually do? It wouldn't change a single thing except make it easier for people to fall victim to a bought account and that's why it is allowed.
You could simply ban account selling from the forum. That's what you do.
Then you still remind people that its possible that others are buying and selling accounts offsite, but its still illegal to do this onsite. So that's what you do.
It would do good because there wouldn't be as much buying and selling of accounts. I can't believe this isn't obvious to you. I don't think you can see things as clearly as you think that you do. Your position of power has warped your judgment to the viewpoint that you can do no wrong.
As an outsider, potential solutions to the problem are obvious. But you are fighting any sort of change tooth-and-nail, and I have better things to do with my time then help your forum maintain its existence. So much for credibility. To pretend this forum has any credibility is a disastrous lie.
TL;DR - You are openly endorsing crooked behavior by allowing account selling to continue unabated.