Damn, on 3 I didn't say what I meant. The genuinely big deal is freedom to relocate and work.
Do you have a source for computerized custom-fitting of shoes? The big deal isn't just the fitting, though, it's reasonably-priced manufacture.
Afaik, jet-packs can be made, but carrying enough fuel for significant travel isn't feasible.
As for flying cars, it finally occurred to people that there were weather and pilot safety issue.
I don't see those sorts of considerations applying to sous vide or computerized custom shoes.
The futuristic prediction which seems to be not happening because people just don't want it is video which shows your face while you're talking on the phone.
Someone I know has a foot problem. Her orthopedist recommended having a scan done to produce inserts to adjust the shape of her regular shoes, and said if that didn't work, then entirely custom shoes could be made. So computerized custom-fit shoes do exist, but they're considered a medical item which makes them expensive.
I would like to propose this as a thread for people to write in their predictions for the next year and the next decade, when practical with probabilities attached. I'll probably make some in the comments.