A guess: Rom coms can't be "event" movies. They aren't "must sees." Now that the average movie release, with P&A, costs $100m, there isn't any way to get people to go out to see a movie that isn't a "must see." You can make a $150m sci fi epic that everybody has to go see. You just can't make a $150m romcom. Something I've been dealing with personally is the propagation of tiny little movies that just go directly to Netflix. I think we'll see more of that as the studio system continues to lock out anything that isn't a nine-figure pre-existing property. It'll be a while, though; it's really tough to make a decent movie for under $300k of a quality that will be accepted by the average audience.
It's happening with tv shows, so I assume movies are next -- but I don't know how the money works there. I mean, what do a few episodes of Arrested Development cost compared to an independent film? What exactly can Netflix afford? Not a movie with George Clooney in it, surely. And until then it'll be a limited market. (Hell, maybe Netflix can afford that shit -- I saw a statistic bandied about a while ago that claimed that any given evening X percentage of bandwidth is being used on Netflix streaming, and it was an insane number.)Something I've been dealing with personally is the propagation of tiny little movies that just go directly to Netflix.
It's nothing compared to porn and spam. Netflix's bandwidth is high, but considering their traffic rides on Amazon's servers, it's hard to say for sure. As to the rest of it, read this.