Bullet train from Mumbai to Ahmedabad

The cost is expected to be 17 billion US dollars. Let us assume that cost of maintenance is 10%. So if the project is used for 50 years, the total cost over 50 years will be 13,781 billion US$.
Let us say the cost of ticket is Rs 1,000. So per day about 500 lakh people have to travel by this train so that project does not make any loss. This is impossible because the bullet trains don't have that carrying capacity and there is not so much traffic between the two cities.