It was merely a less awful deal than most other indie commission models, with sites like Kongregate and their ilk demanding >80%. Against that kind of flaying and skinning, 30% was an improvement!
I've said it before. A very good agent, who actually works for their client and arranges them with repeat lucrative contracts, gets 15%. App stores, as gatekeepers to their walled gardens, extort twice that.
Btw - if they want to get into recurring payment scene, let them compete with payment processor fee structures. For the privilege of arranging trusted, mostly secured payments and handling the back office accounting, 3% should be a damn good ceiling. The payment industry is making money hand over fist with that kind of cut.