It seems that to eliminate one problem, that of multi-account players, WGT has put in place a rule that reads "one account per computer". They have no way of proving, or disproving, that a single computer can be used by multiple people so they error on the side that says computers cannot be shared.
From a customer first view, this makes no sense. From a business sense it also fails.The only thing that it does is make it easy for WGT to say that they are able to police the issue of multi-account players. In other words, "WGT will not tolerate one computer being used to access two or more accounts." In reality, WGT cannot stop anyone from having two accounts. The only thing they can do is stop people from sharing a computer to play the WGT game.
The real answer here is for WGT to find a way to solve a problem involving cheaters that does not infringe on the 98% of society that plays fairly. Which is worse; having some multi-account players or arbitrarily stopping someone like ForArt from playing on the same computer as his late brother?