Previous AI systems generally fell over when they hit the final 2% of real world scenarios, unable to cope with the explosion of complexity.
In contrast, modern AI finally provide a toolkit for "last mile AI" (proverbially speaking), by allowing incorporation of those scenarios without breaking the entire previous model.
And the barrier to surpassing that problem has been hardware (now approaching solving) and calendar- & person-time.
The problem with 1970s AI (ingnoring hardware) isn't that we couldn't build useful AI, but that we couldn't afford to build useful AI in most domains.
Calendar time costs money. People time costs money.
Deep learning and derivates finally provide a solution where we can substitute machine time and data volume for calendar and people time. As a result, we can afford to do things in domains we couldn't before.
Citation needed. Deep learning is used to power some of the biggest money making machines in the world (like google or facebook ads) and they're still bad. It's also used to power products like voice recognition and it'll still add dog to my shopping list instead of soap.
Where I'd expect to see interesting developments (hopefully published openly) is in sentiment analysis / disinformation identification, as companies begin to see it as an existential threat to the unregulated nature of their businesses and fund accordingly.
Tech demos have a way of setting good impressions that are not realistic. I have a feeling that's exactly what is going on right now, but a few more close calls with crashes and the shine wears off.