Yup.
I doubt AI will make things cheaper or give most people more time.
I don't think I am. Society in general has been moving in the right direction for a long time. Racism, mostly gone.
Slavery, mostly gone.
Gender inequality, mostly gone.
Religious intolerance, mostly gone.
Environmentalism, very active.
Materialism, getting better (I believe).
Historically, there has been no middle class, you were either wealthy, or on the brink of starvation every day. A middle class person now has a better life with more luxuries than royalty did 150 years ago. I think because everyone was so poor, that having 'stuff' was a show of wealth. And as society got wealthier, people wanted to show off their 'stuff'. I believe people are slowly starting to realize that: 1) no one gives a $#!+ about other people's possessions, leading to 2) working like an @$$#*!÷ to buy a bunch of crap that no one else cares about is a waste of time. In this regard, millennials are on the right track.
For the most part, it's demand that drives supply, and demand is changing to a less work oriented lifestyle. If AI can advance employment laziness further, people will use it for just that reason. I think the days of getting up to go to work, so that you can buy a car to get to work faster are quickly fading.
As for costs not going down, free market economics. If it wasn't for our gov't policies, pretty much everything would be getting cheaper year over year.