Is this going to be like H264 deprecation? i.e. if there's a "few" remaining use cases that they can't get people moved away from, they'll delay and eventually

Is this going to be like H264 deprecation? i.e. if there's a "few" remaining use cases that they can't get people moved away from, they'll delay and eventually not do it, leaving everyone that went ahead and jumped into their "replacements" feeling like fools because they spent engineering effort for zero results except to promote a Google political move?