I think the main problem is that is just "too hard" for most of the younger gamers to get started. First, you have to find a copy of '46, then find and apply 4 levels of official patches, then to fly on most servers you need to install some unofficial patch. After you've done all that, you have to learn to fly and operate an array of querty old airplanes. That's a lot for someone who does most of their gaming on an iPhone!