They had that world in the animated film WALL-E. All the people were fat and suffered atrophy and were consumed by mind numbing electronic pacifiers.
Haven’t seen that movie, but such a world isn’t impossible.
In another Sci-Fi franchise (the Dune series of novels), the intelligent machines were overthrown. Who knows how this will unfold; I freely admit that I do not. If I could foresee the future that clearly, I would be in Las Vegas right now betting on sports.