No just some porn freaks will try it. there are already killer apps for bitcoin, like mycelium, bread wallet, getgems etc.
I am afraid that you are right. If you are creator of decent video content then you will probably use Youtube or stream on Twitch. These services have bigger user base and audience. For now Streamium can be only really only used for sex webcam niche and be successful with it. There is already some advertisement of girls in the services section on our forum. Apparently it costs $15 to be able to watch hour of girl xxx stream...
I've tried that stream mentioned and it easily could be a video loop of the girl ( in fact I'm working out a way to verify with her now!) and I have feeling will be abused by fake girls to start. But, you are right there are bigger fish to fry with all this. I just did a stream of the View of KLCC TWIN TOWERS, Kuala Lumpur, Malaysia here:
http://www.reddit.com/r/Streamiumlive/comments/3780at/streamium_live_in_klcc/The screenshot of it:
http://imgur.com/ElND1qa now not sure why people would pay per second in BTC to see the towers but some might who knows.