You could just say flat out that in the future you're planning to be a streaming service only. Let me guess, you cant DL the scenes soon neither, or you'll have to buy them individually in order to do so? I'm sorry, but the tech isnt even close to being there yet, so the only thing you'll be doing is losing customers.
Also your own experience of never using dlna is not the customer research you may think it is. It's good to have visions and so on, but I think all youre doing is pissing of the existing customers with this.