Most games don't even have demos and the ones that do get them much after the game is already released, that alone somewhat defeats the purpose.
I hope the first thing that's accomplished is a backup loader. If they create something to run ISOs that's already a backup, I'd prefer that over having to burn a BD anyway.
I completely disagree. I don't remember the last time I played a demo that gave any more than the slightest glimpse of what the game would be like. With demos that limited you could get just as much information from pictures or videos showing the game, which give next to no info at all.