This seems pretty reasonable to me. If you don't like the deal you can still target these customers. 20% cut for advertising, billing and other features sounds

This seems pretty reasonable to me. If you don't like the deal you can still target these customers. 20% cut for advertising, billing and other features sounds like a deal that many people would (and do) take. I would be much more bothered by the 20% cut if there was no other way to target these customers.