Ok, so how did he come to own it, how did he convince people to work it for him. In reality there's a few ways this can happen:

- A government can award him a monopoly forcing all investment in that field into his organisation, guaranteeing his success.

- A government enforced banking cartel can issue investment only to their favorites, guaranteeing their success.

- Maybe he built the machine and is so successful at keeping his organisation ahead of the competition he has become very wealthy.

- Maybe he has nothing to do with the creation or operation of the machine but was key in the process of taking it from a weird idea to something extremely useful.

In the first two the government is the problem, not economics. In the second two there is no problem. His success is merited.