India is Now More Populous than China

The reason for the switch on the population throne is the lower fertility for China that will continue to decrease the number of Chinese to 1.390 billion for the next 20 years.
Argument: According to the United Nations, India will pass China as the most populous nation in the world by 2030.
Questions: If India has not got a permanent place in the United Nations Security Council by the time, will they demand it when they become the most populous nation in the world? Will this cause a change in foreign investment in low-cost labor to India from China?