I wonder if there is some hybrid where the graphics rendering and input processing happens on device but the brains of the game live on the server.
At this point, code might be less valuable than art assets.
Considering the economics, the graphics rendering would have to be shifted to the server too and output as video
Any MMORPG?
Gacha games do this, e.g. Genshin Impact. When you turn off your internet while playing a lot of game logic fails (e.g. damage calculation) before it tries to reconnect.