I agree that a $100/month is probably on the low end for the whale category. But, I think his broader point is that there’s at least some evidence that the whales in question are, in fact, people with disposable income (i.e. middle class or better; often professionals) for whom pay-to-play games are a substitute for other equally expensive IRL hobbies that are not uncommon among people in that social strata (like, say, golf, tennis, or skiing).
