George Hadley and his family live in a home that does everything for them through technology. The children learned to love their technology and not their parents They grow up depending on technology. Because of this, the kids kill their parents when they take away their technology.
Effects of Technology
When parents spoil their children, it can have irreversible consequences.
"I feel like I don't belong here. The house is wife and mother now, and nursemaid."
The Veldt by Ray Bradbury
No more nursery!
Children Being Spoiled
"Too much love never spoils children. Children become spoiled when we substitute "presents" for "presence."
The house with all of its technology is replacing the parents, which creates the conflict of the children being spoiled and not loving their parents, which leads to the theme.
I think the setting develops the theme the most because the technology of the house cause the conflict to happen and the story wouldn't be there without it.
The conflict helped develop the theme because it was what made George Hadley spoil his children.
"I sensed only that you spoiled your children more than most. And now you're letting them down in some way."
Because the children loved their nursery and technology more than the parents, to them their parents were the enemies since they stopped spoiling the kids.
"You've let this room and this house replace you and your wife in your children's affections."