I think you right about building a stronger football team takes time to build a strong football team effort and investment, pulse a good football background, which include infrastructure, coaching and support, can help nurture talented players and improve the sports over all standards. And aslo India football team face challenges in terms of ranking and development, which it making it looks harder for the young player's to see a future in football and in sports in total.
However, if the Indian team can qualify for the main stage of the World Cup once, then the popularity of their football will increase a lot and they will see many good footballers in the pipeline every year. Now the question is how India will qualify for the main stage of the World Cup despite being so low in the rankings. We know that India has a huge population, this can be a big business for FIFA. If it is possible that FIFA organizes a World Cup tournament in India, then the football craze in India will surpass all past records. Besides, as the host team, India will be able to directly qualify for the main stage of the World Cup. This will not only benefit FIFA financially, but also improve the Indian football team. However, to do this, India will have to invest a lot of money.
I think there is another disadvantage in initially organizing the World Cup in India, for example, the price of a normal ticket in other countries is very high, in that case, if the ticket price is very high in India, will Indian citizens buy tickets at such a high price and sit in the stadium to watch the World Cup?