They also don't care about your company not wanting to support a 10 year old device anymore. They bought and paid for a device and they will expect it to work until it dies or they choose to replace it. In this case it will die, but not because it's broken.
Devices like the Nest, TVs, refrigerators and so on are still expected to last many many more years than something like phones and I don't think a company like Google is capable of committing to something that long term.
The alternative to not make that long term commitment is to design devices that work without a hosted service.