I would say that slavery absolutely fits into this broad generalized definition of leverage that I am using. Here is another example:

In the case of the founder, as I have mentioned, hiring someone gives them leverage. But conversely, a person taking a job with a large company gives the employee leverage. For instance, as a Google software engineer, you have the ability to command huge amounts of computing hardware that Google has at its disposal. Different roles may have varying degrees of ability to leverage the corporation's scale to their purposes but it's certainly a very real thing for many roles.