If their customers are not satisfied, it is a problem for the online ticket sellers, and at least one service the Wiseguys are providing is that the ticket sell

If their customers are not satisfied, it is a problem for the online ticket sellers, and at least one service the Wiseguys are providing is that the ticket sellers must keep innovating to figure out a better way to serve their customers. Why don't the ticket sellers just eliminate the middle-men (the Wiseguys) and just do what they are doing?