Real life is rubbish and society has evolved so the majority of human interaction is done in a simulated world.
Real world tasks such as maintenance, healthcare, and farming are usually done by robots and either delegated to a AI or carried out through an interface in the simulated world for pure work at home without risk of injury or the need for a commute.
Many jobs have now moved purely into the virtual world (such as retail and hospitality) however entirely new careers have emerged which would never have been possible in the "real world" and have necessitated the creation of millions of NPC.
What careers are there in a virtual world for a specifically designed NPC and for their human counterparts?