Hope that most of them did, since URD is my home country (Slovenia) based company. And quite a lot of the comments in EGT thread are comments on having to pay for the cars. And if people are comitted to creating good quality, it's only right to get some reward for that.I see your point, however so is the DTM yet those servers are full.
Also watching the thread in the main forum there are soooo many people that own the mod. (begins to wonder how many actually paid for it and therefore had the update)
I find I am a bit better in the GSCE and Race 07 club races, don't know why, but I feel a bit more comortable in those races. I also find quite a few more members more to my (low) skill level.