Neoclassical economists say rich people contribute to the economy by "allowing people to use their capital," but allowing someone to do something isn't work, it's the absence of work. If I disallow someone to use my factory machines, it would require work for me to prevent them from using it, as I would have to get the police involved or at least some sort of private security. Allowing someone to use something is just choosing not to do anything, and supposedly they would have us believe that capitalists not doing anything contributes to the economy.