They're not artificial, they're inherent to the business model. So I agree that the limitations I mentioned don't have anything to do with streaming technology,

They're not artificial, they're inherent to the business model. So I agree that the limitations I mentioned don't have anything to do with streaming technology, they crop up time and time again because of some of the limitations apparently required by a streaming business model. And so in that sense I think it remains a useful metaphor. What sort of business models will be profitable when it comes to streaming courses online? Will they always put the student and learning first, or will the viable business model for these impose limitations, or push things in the wrong direction.