> There is obvious utility to railroads, especially in a world with no cars.

> The net utility of AI is far more debatable.

As long as people are willing to pay for access to AI (either directly or indirectly), who are we to argue?

In comparison: what's the utility of watching a Star Wars movie? I say, if people are willing to part with their hard earned cash for something, we must assume that they get something out of it.