B772,
MSN004 left the show on the Tuesday, was repaired overnight and was back at the show the next day. Winglets are CDL items, spares are kept for them worldwide. The aircraft did subsequently fly displays at PAS 11 on following days.
500N,
The aircraft was under tow, pilots had nothing to do with it. Likewise the incident in BKK, it was also under tow. The one in Toronto, the aircraft was stationary at the gate, and the catering truck hydraulics failed, collapsed on top of the wing. The JFK one was only out of action for a few days as well, they flew it back to TLS, got a new wingtip, all up that aircraft was out of revenue service for about 6 days for the investigation and repairs. In all cases, the aircraft were repaired quickly and were put back into service. If anything the aircraft has shown it can take a beating and recover rather quickly.