If I were a stockholder, i'd be worried about any company that did price gouging.
Its not like Apple are a fashion house or perfume where the product price bears no relation to the materials so have no need to charge the Apple tax for extra storage in the phone.
To have 64 gig in a flagship device is just a joke.
Problem is, Apple is not the only one doing this. Samsung on the other side is also doing the same. Their flagship costs just as much as Apple but their support is piss poor at best. Their S and Note annual series priced accordingly with iPhone's price. They may seem a bit cheaper or throw in freebies to make it seems more valuable. But in the end, people pay hefty dollars for flagship phones, no matter the brand.
A few exception maybe Huawei, Oppo, Vivo and other chinese brands. Those are trying but really, you don't want to buy them to get the best support and experience.