These rules sound like reasonable steps, upon first reading. Not sure what the downstream effects might be. Is there any thought given to cloud based devices

These rules sound like reasonable steps, upon first reading. Not sure what the downstream effects might be. Is there any thought given to cloud based devices becoming paperweight when companies behind them just stop supporting it or turn off the API? I'd like some "assurances" in place that if the company either goes out of business or decides to sunset the service, it would be required to open source (or at least make available for download). If memory services, that happened to some Nest models a while back.