You might be thinking that....and be happy with that thinking....Just look from the outside....No bady watches ur tamil or telugu moviess..No bady even in north watch Rajni except tamilians..... first of all no one understands tamil how they will watch...why they will watch simple logic:-)that to rajni is funny joker cutting bullets....etc
Tamilins will say Rajni is big star, Telugu will say Chiranjeevi is big star, karnataka will say rajkumar is the biggest star, Kerala will say mohanlal is big star. These stars are only in perticular state..Not outside.
So Hindi is national language...every one watches hindi movies in whole country and all NRIS and other asian countries and all know Amitabh followed by SRK are big starts in the Indian cinemas....
