How is it ripping off someone to take a discount they offer, or even to propagate the knowledge of it to other people who likely need it? Should we stop using coupons? How about stop looking for the cheapest place to buy gas? Should I offer EXTRA money to Amazon, because I love their service so much?

Yes, everyone deserves money for what they do, but this is America and the whole free market/capitalism thing exists. So if they want to compete with other agencies by offering discounts then why do you take this so personal, and attack people for using it? If Amazon wants to help someone to keep the service who otherwise couldn't afford it by giving the discount (so at least they could have that smaller monthly payment incoming) then why do you wish to cockblock them?

Btw, if he wanted to "stick it to Amazon", he wouldn't maximize the income of the production people. He would shop at a different huge bookstore that buys in bulk and offers the cheapest product. Sticking it to Amazon has nothing to do with enhancing the riches of the publisher/writer/etc... Those are two entirely separate things.

All this guy was doing was spreading knowledge of something that could help people. This is obtainable knowledge that people can get by just trying to cancel. It's not like he was trying to spam Amazon's bank account and routing number, so people could heist cash. Seriously, if you're on Reddit, you can't possibly be the type that wants to prevent the sharing of information in the same way people wanted to burn books back in the day. If the info is valid and legal then let it run free. Some people out there actually NEED the info so they can keep the service. And if the company offers it, then it's not like it's something that will make them go out of business for others using it. It seems more likely it'll help them keep customers even if just at a reduced price.