It's not unfair, it is the choice of the manufacturer. Schumacher can put a CF-chassied car on the market if they choose to. Unfair would be if the Rules prevented them doing what Mardave are doing - they don't.
If you want a CF-chassied car from Schumacher, ask them why you can't have one. It's not the Rules at fault, it's the manufacturer not supplying what you want!
You're right about the carbon chassis. Why don't you make one and sell it commercially through the shops as a complete kit, then you'd get what you want!!
