We used to think that Upper-Limb ETDs (Electric Terminal Devices) were intended to augment multi-articulating bionic hands for specific uses-cases only.
But some of these devices have become so useful that we no longer hold this view. Bionic hands are excellent for light indoor tasks but are still not suitable for rugged activities that require a strong grip, mainly because they remain too fragile. ETDs, meanwhile, are great for rugged activities but not for shaking hands or operating a mouse or keyboard.
This means that the average user needs both types of devices to perform a complete set of daily tasks. Indeed, the happiest upper-limb bionic users that we encounter own both types of devices. This, in turn, suggests that governments and insurance companies should be funding the purchase of two devices for each end-user, not just one.