Everyone already knows about Amazon and it's become one of the first places people visit if they need something though. No one needs to introduce you to Amazon and Amazon really doesn't need those YouTube links and what not to drive traffic to them. It would've made sense when it was just launching, but I see little reason for Amazon to be paying for an affiliate program when they're one of the largest (if not the largest) ecommerce sites out there.
There are many people who get paid vast amounts of money to become the CEO of a company, play professional sports, or star in a movie. Earning a high active income is often a lot of hard work and requires a dedication beyond most of us. It’s also limited because no matter how much money you get paid you still need to show up to work to earn your money.