Nobody calls it concentration risk when it's a salary You have one client. They pay one hundred per cent of your invoices. There is no second client, and they can end it with thirty days' notice. If a friend described their business that way, you would worry for them. That is a job. It is the arrangement we were all taught to call the safe one. Nobody calls it concentration risk when the money lands on the same day each month. Regularity and security are two different things, and this year...