The thing about IAPs in games is that most money comes from whales, people spending thousands of dollars for customizations or pay-to-win items, this rises the average by a lot. It would be nice to see the distribution of payments.
This is the only thing that makes me pause before dismissing the article as ridiculous in cases where it's people choosing to spend money on cosmetics. There might be whales who are addicted to the spending or gambling somehow.
Otherwise as someone noted it's just price discrimination, and in a way that lets people try and play games for free. Really I love what video games have become.
