There is usually a reason for losing a rig and often it is human error. I have seen lots of new boats in shows put together with not quite the right required parts (because they are lost or failed to get packed) just to make it presentable for display. If the correct parts were not retrofitting because someone forgot to do it, that could be a potential problem offshore. One wants quality control over all the components of the rigging. I don't know if I agree with the comment about delivering boats from show to show has more stress than regular use of the boat by the buyer. Deliveries should be safe and simple and sometimes it just makes sense to reach with a genoa and leave the main (which can be more problematic) stowed. After the boat is sold, then if the owner is a serious cruiser or racer, the boat will be put through the paces that will have more wear and tear over the years, I would think. I do know of a Jeanneau that was sailing across the Atlantic to Annapolis for the show where the main bulkhead split from top to bottom, which would not give one much confidence in the quality. The dealers at the show put a very large poster on the bulkhead to hide the fractured bulkhead. This was many years ago.