i think you've counted it in a way that makes it sound cheap, but in reality isnt.
$100k per month is extra revenue, if they do a half-assed job. A customer actually has no competitor to move to - crunchyroll has a defacto monopoly (barring piracy).
The price of the subscription is already adjusted to be the maximum of what the market would bear for maximum revenue - presumably raising that price higher would lead to lower subscribers and revenue.