Of course it's possible. Those printers are not getting updates, either. Nobody is changing the printer side of this. And if they were it'd be a change in the protocol. It's easy to just freeze the protocol (which already happened years ago), and if any printer manufacturer wants something new then can go fork off and do their own thing. That's very different from breaking something old which is what's happening here.
> More importantly, CUPS and driverless printing standards have solved the problem (os-specific print drivers) that cloud print was designed to work around.
CUPS still needs printer-specific drivers to do the actual printing part. And how widespread are driverless printing standards? Do such printers actually exist in consumer households? My Dell printer from just a few years ago certainly isn't.