There are already clauses covering this in the code of conduct which 
Registrars are bound to. 

On Thursday 08 June 2006 14:30, Tony Owen wrote:
> Hi List,
>
> If the policy is to be reviewed, AUDA should consider a clause outlawing
> Registrars speculating in domain names, it seems in the US at the moment
> this is a problem. Something that works along the lines of "insider
> trading" at the stock exchange.