Incentive for a S2000

A S2000 costs about twice compared to a grp N car, so what is the incentive for private teams and drivers to choose a S2000 instead of a group N car?

Is it:
- The sponsors rather see a European car under their sponsorship
- That in average a S2000 car has proven to be more competitive compared to a grp N car
- A S2000 car is a racecar compared to a grp N car
- Teams and drivers have lot of extra money
- Something else