Another way to look at it is that the best minds are thinking about how to optimise capitalism.
They are doing that and in effect we are all getting a better more efficient society. Plus the best minds aren't working on world peace because people vote for people with the best hair to do that job.
That only really makes sense if you think that ads are providing information that's relevant to people's best interests and is going to be fed into fairly rational decision making, rather than exploiting cognitive biases as an attack vector.
They are doing that and in effect we are all getting a better more efficient society. Plus the best minds aren't working on world peace because people vote for people with the best hair to do that job.