3) you have to be adult for signing the contract
You never know, the world's best game programmer might be an 8-year old.
I can't quite recall from my raw memory, but there was a movie about a child who wanted to grow bigger, and his wishes end up true, he became an adult. His mum kicked him out off the house not knowing who he was. Then they thought he kidnapped himself... Anyway, he had to earn money for the first time, and accidentally got a job at a toy shop of some kind, was one of the only few who could play the floor keyboard (maybe that was from another movie?) and designed really awsome lego models and stuff, and the shop raised him as one of the top designers.... I can't remember past that, but an adult with a child's imagination can achieve a lot. What if he never had the body of an adult?