Why do you need a body when you can wire funds to contractors? If I were a genius entrepreneur who wanted to build some sort of big chemical plant, it wouldn't

Why do you need a body when you can wire funds to contractors? If I were a genius entrepreneur who wanted to build some sort of big chemical plant, it wouldn't matter whether I'm fit or in a wheelchair. I'm not going to be building it with my own hands anyway. If it were commissioned by a reclusive billionaire who nobody has seen except via zoom call, and signed off on by an engineering firm whose chief engineer also is similarly reclusive, I think nobody would particularly mind.