You're arguing the search is "good enough". Because we can adapt to the machines. But the company who will not force us to do so will get our business. The company who creates the best digital butler will win. They know this. They try hard. And they still fail at simple stuff when judged by humans.
Another possibility is that maybe it really is "good enough", and they get a bigger advantage by competing with each other on more important aspects of usability than these kind of trivial issues
