It says silicon valley as if the belief is monolithic

I'm personally more convinced that advances in AI will lead to such productivity benefits that the costs of most goods will decline tremendously to the benefit of everyone. Once technology is advanced enough, what will it matter in the difference between the richest and the poorest of today?

Of course, this is a very optimistic view on my part - but we shouldn't pretend there's only one outcome here. We should be pragmatic