I thought quite a bit about that.
Probably the expectations on the results of attending a survival school are wrong.
The school will provide their students with a situation and resources to allow successfully completing the course. Itīs basically the students fault if the student fails. Mother nature may not be that generous. Survival schools - hopefully - take care to make sure their customers survive. Mother nature may not care.
The scenario in the course may also not be a training comprising the right things (e. g. stay with your vehicle or stay put if you are lost). If one does not do it in training one may not do it in an emergency.
Survival training can provide basics for surviving but it is not likely to provide the ability to make good decisions under pressure.I think it would take additional approaches to get the willingness to do some prior planning (e. g. collect info about the expected road conditions or plan an alternative route) and train making decisions under pressure (not neccessarily survival related).
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If it isnīt broken, it doesnīt have enough features yet.