The behavior of consumers in the certificate marketplace is part of the systemic problem: nobody cares very much about their CA, as long as it causes the little padlock to display correctly (and, more importantly, for warnings to not display) in users' browsers. That's it; beyond that it's a race to the bottom on price.
If a few CAs went down in flames and in doing so created a nasty firedrill for all their customers (which, on the scale of firedrills, getting new certs issued really shouldn't be that big of a deal, compared to a zero-day vulnerability in some piece of the server stack, which happens fairly regularly), suddenly there might be an interest in acquiring certificates from somewhere other than the cheapest-possible source.