I feel like this is treating the symptoms rather than the cause. Companies shouldn’t be allowed to have such a tight grip on a consumer’s digital life such that an account ban is crippling.
Everyone thinks their system is reasonable, that's the whole problem. Banks obviously don't think chargeback fraud is fraud when they perform fraudulent chargebacks. They think they're reasonably legit, which is why they perform them. Retailers also think their fraud prevention systems are reasonable. Reasonable means different things to different people and it certainly doesn't mean infallible.
Nobody in any of these situations thinks they are being unreasonable.