You don't need a commercial aggregator to deal with the problem of an audience. You just need a well-known aggregator. The mobile phone is seems like a good an

You don't need a commercial aggregator to deal with the problem of an audience. You just need a well-known aggregator. The mobile phone is seems like a good analogue of the walled garden model and unsurprisingly computers like Macs and Chromebooks show some of their roots there.