I disagree. We've already passed the tipping point for tech, and investment will continue to accelerate. This is true for various form of artificial intelligence, and the rest of tech.
Businesses in general started to see the appeal around the time that the Google Assistant, Cortana, Alexa and Siri started to become actually useful and desired by the general public. Because of that, there will continue to be a push to extend and enhance those capabilities.
The current systems can turn a normally worded question into a web search, and present the results in a pleasing manner. The next step is to extend the ability of the systems to actually understand wider and wider ranges of questions. We are still a ways away from having free-flowing conversations with our computers, but there are many steps along the way that are useful of themselves. Advancing this technology is a competitive advantage, and becomes key to drawing in and keeping people in one of the various tech ecosystems (Google, Microsoft, Amazon, Apple).
In the wider business world, people are finding new and better ways to apply this technology.