Of course netflix is optimising costs, otherwise it would not be a business, I just think they put much more effort elsewhere. They could be using other words, like "financial discipline" :)

My point is that even if I get 20 times discount on egress its still nowhere close, since i have to buy everything else - compute, storage are more expensive, and even with 5-10x discounts from list price its not worth it.

(Our cloud bills are in the millions as well, I am familiar with what discounts we can get)