I haven't read all the posts in this thread, but when I hear of companies with super long backorder waits I wonder if they are "robbing Peter to pay Paul". Basically there is no incentive to higher more workers, slow down new sales, or otherwise catch up on orders because the money collected on backorders has already been spent covering prior orders and expenses. Kind of like a pyramid scheme. If they rushed to get all the backorders caught up it would basically cash strap them because they don't have enough cash to fund the expense of catching up. They need new orders, and lots of them, to keep carrying the company.
I know someone is going to call me a conspiracy theorist, and I'm not saying Carbon 6 is doing this, but this happens in all sorts of industries all the time.