If you think someone can become worth tens or hundreds of billions of dollars without exploiting anyone then boy howdy do I have news for you.
Inventing something doesn't magically sprout it into existence.
The person who invented the pill does not deserve thousands upon thousands of times more reward than those whose labor goes into producing it.
If you legitimately believe that billionares have worked thousands or hundreds-of-thousands times harder, or are that much smarter, than you or me, then that's just some ultimate self-hatred right there.