Comment by OkayPhysicist

Any such ban would be in direct conflict with California law (where I assume Character.ai, as a company founded by Xooglers living in Palo Alto is based), under the same logic that forbids non-competes. California has created one of the most prosperous countries in the world under a framework where you actually have to entice your employees not to leave, rather than shackling them to their workstations, and I would be extremely opposed to any attempt to change that.