The biggest problem in India is thinking they can permanently buy customer loyalty by offering big discounts in the beginning.
This is where the 'intense competition' is dangerous part comes from. After you have spent billions on subsidising prices for the customer, newer companies come, and do the same. The customers see no issues in now buying from the newer companies. The older companies find themselves in a hard position with no profits and big debts.
In India customers are loyal to only one thing 'cheap prices'. Thats all there is to this story. Many times even if there is no real competition, you are often competing with the customers mindset itself.