Taking a quick look at the satellite photo there are 43 ERJ's (145?) too on that airfield..
http://goo.gl/maps/60pkm
Apparently the same story as the CRJ. They are narrower but still a usefull business jet alternative? Not that many options it seems.
https://www.modstore.aero/modificati...ft_70__70__70_
RJs changed the business 1993 -2008 and now evaporate?