I think robots and AI are going to essentially wipe out the middle class down to a barely visible hanger on.
What you will have ultimately are two ownership classes being dominant. One in the rural and one in the urban. Urban being the wealthy elite owners of production, then a small section of very high skilled tech people, then a handful small business owners who cater to them, and finally a little to nothing group of menial laborers where robots can't efficiently function.
The other will be the rural, where you will have families and small communities who are self sufficient, raise/make their own stuff, and live mostly like people in rural areas and small towns have for millennia.
Anyone who doesn't live in one of those classes is SOL.