More money in a new game though Biggles.
I would love to have someone explain to me how this works:
Ferrari Challenge doesn't seem to me the kind of game, like NFS, Midnight Club or Dirt, that would appeal to the younger gamer, or "casual" racer. Judging by these forums & the online activity, very few sim-enthusiasts seem to have bought FC. One of the reasons is most likely the variety of problems that existed with FC when it was released.
Now, instead of continuing to improve & expand FC & thereby (possibly) attracting more sim-fans to buy it, Eutechnyx/System 3 abandon FC & work on a new game. Who is going to buy this new game? The sim-fans who didn't buy FC? The younger/casual racer who didn't buy FC?
The answer, IMO, is the small number of people who did buy FC, minus the people who feel betrayed by the lack of promised follow-up & support for FC. That's not going to be a lot of people!