Thing is with the DC10/MD11 it's large enough to be useful but not so large as to be too expensive to operate. If UPS and FedEx suddenly have to scrap them, then there's not much to replace them with. The A330 doesn't age well and all the bigger Boeings are either already converted or have been scrapped

It's a surprise that this failure hasn't happened more often and it will be interesting to see how many aircraft are about to fail. It also begs the question as to how such a high cycle airframe had yet to reach the inspection threshold. Replacing the parts and dropping the inspection to 2,500 hours might be enough.
The only operators that might not be able to afford it are the flying hospital and the fire tankers which is a bit ironic as they're probably better maintained due to their more specialist uses.