The reason why one could make money if you're executing an Artificial Tax Loss is because, you have to buy the same stocks back 30 days later next year. That implies that one still believes there's value in the stock as you would be holding the same stock.

Typically, if a stock is under a lot of Articifial Tax Loss selling (CMK is a prime example), there will be a corresponding buying in January of next year. IF the company does not go under in the meantime, the SP will rise in January.