Even if Edge goes out of business, you have full control over your private keys, so your assets are safe on your device. The keys sit on the user's device and are still fully accessible using their full password or biometric login. This means that even without our servers or if Edge disappears, a user is still able to access their account as that information is encrypted and stored locally on the device. Users will still be able to send and receive funds on the open blockchain networks as well as extract their private keys/seeds which they can also use to restore their funds on a third-party wallet.
Do you want to be sure?
From a device on which you already did the login, start the airplane mode, then open Edge and login.
You will get a warning, because your app is not able to reach the server, and you will not see the exchange rates, but you will be able to export the Master Private Key (seeds) of each wallet!