That's the same mistake made with every new, and eventually successful, technology - we haven't found a valuable application yet, so the technology is not valuable.

Finding the valuable application is often the hardest part. That it hasn't happened yet is meaningless. Some technologies sit on the shelf for decades.

AI seems to have a lot of potential: It may be the most valuable technology ever; it may not provide more value than it does now, or something in between. Nobody actually knows. The challenge of innovation is managing that irreduceable risk. It starts by accepting risk, accepting that you don't know. One wrong way is to deny the risk - denying uncertainty - by either saying it's worthless or that success is guaranteed.