One of the greatest tricks ever pulled was convincing workers that they're being paid what they're are worth.
If you're making $15, $30, or even $50 an hour, your employer is still making more from your labor than they're paying you. They have to, or they wouldn't hire you.
The gap between what you produce and what you're paid is where fortunes are made.
The billionaire doesn't create billions of dollars alone. Millions of workers create it for them.