This announcement was not your usual run of the mill announcement which has only appeared in obscure news outlets which serve a interested demographic "Gamers". This is a story which has been picked up by the major News media such as the BBC. This means the key points that concern us have been widely disseminated. The key issue here is not how much Unity want to charge game developers but the information Unity will require so that it can arrive at a "Fair price". Yes small indie devs wont have the means to resist this but we are also talking major developers who have the legal equivalent of the SAS on fast dial. Basically Unity are trying to change the terms of the contract after it has been signed, they do not have a legal leg to stand on.