There is a point in the article which the author kind of glosses over that is really important. A lot of the bots (Siri, Cortana, Slack bot, etc...) are refined

There is a point in the article which the author kind of glosses over that is really important. A lot of the bots (Siri, Cortana, Slack bot, etc...) are refined through free data provided by the masses. These systems get smarter at what they do, essentially for free. And his second point, that once an AI understands it users preferences, it ability to change slows down because unlike when it started, it ignores virgin data, and only follows what hit has been taught. That is a huge potential issue. Seems like a topic ripe for researchers in Machine learning to jump on.