When a company stops supporting devices like this, the devices and their documentation and code should be required to enter the public domain. It should not be allowed for assistive devices to become e-waste stuck in a patient’s body.

This is also why regulatory agencies have been systematically crippled over the last 40 years or so. Damn near every sector has had their regulatory agencies crippled by some combination of reducing authority, underfunding, and understaffing. When the agencies work, the message is “see, we don’t need those regulations anymore because we’re taking care of things fine on our own,” and when they stop working, the message is “we shouldn’t be spending money on these agencies! They don’t do anything anyway!”