Earlier quoted context omitted.
Not only cryptography coins,even traditional banking,e-commerce,and our modern society would go down. Quantum for all.
Yup. Quantum Jubilee is coming. But interestingly, even just the credible threat of Quantum Jubilee could have devastating effects on Bitcoin classic. Banks might be better prepared to switch over to quantum-resistant encryption since they're already centralized.
I'm not sure I'd bet on them having a quicker response than an open-source project with millions of interested parties.