The problem is that any two competitors X and Y, in any field.
If X does not plan for low-probability failure and Y does, then Y will not have the additional inefficiency/overhead and so X will out-compete Y.
If the time frame for low-probability failure is long enough, and if being out-competed means the end of your business, then an efficient market means that risks which typically take longer than time T to manifest will not be handled, where T is the time for X to out-compete Y, given their advantage.