Well if you play GT3 youll see that the licence system is the same. GTConcepts licence system is like that because the game is so short, you can motor through the game in around 4 hours, maybe less. GTC is mainly eyecandy, although it does give you a nice multiplayer alternative to gt3 occasionally. Did you know that you can go off course and the game wont fail you. GTC has to be the easyest GT game ever.
But its not really a GT game its a showcase for new/concept/hybrid cars in my opinion.