We have considered this exact scenario and have prepared a decryption application for backups which can extract raw private keys from backups provided you have all the necessary information (global pin, global password, wallet pin, wallet password).
We will release this application as an open source project on GitHub (link below) in the event of the project/business shutting down so there is absolutely no need to worry.
GitHub link: https://github.com/bc-vault
With version >=v1.3.2 of the firmware and application you can reveal raw private keys of all your wallets and not worry about this scenario anymore! See this KB article!