That's a good idea but I nevertheless think big clients (client reader + integrated access to server api) will win anyway because if you have to pay a client an

That's a good idea but I nevertheless think big clients (client reader + integrated access to server api) will win anyway because if you have to pay a client and then pay a subscription to a server to have access to an implementation of this API I don't think it will be very appealing. All the current model of 'small' clients was based on the fact that the access to Google's (non official) api was free. That part won't be replaced.