I agree that they should be held responsible for negligence or poor faith actions. But I'm not sure they should be responsible if their equipment caused a fire because it was shot full of bullet holes by some idiot with a gun[1]. My understanding is the law currently holds them responsible if their equipment was involved, regardless of whether or not they were negligent.
[1] https://www.sacbee.com/news/state/california/fires/article22...