There's also the problem that electronic devices last a long time -- often much longer than any manufacturer wants to admit.

Vehicles, PCs, printers, and routers can easily last 10 years. Refrigerators and HVAC units can last 20 years or more. And now we're putting "smart" stuff into electric circuits that should last the lifetime of the house. The manufacturer will probably go out of business long before those devices go out of service, and there's no guarantee that there will be anyone to push one final firmware update or release the source code in the hectic last few days of an imploding business.