And they won't qualify any time soon. FIFA is as corrupt as India is filthy; if it were a simple matter of protecting the National Izzat Reserve, Modi could just throw a mountain of cash at the bureaucrats and powers that be, and hey, suddenly India wins the bid for the 2038 World Cup. I assume the same would apply to most of the other major athletic events, such as the Olympic Games and world cups for globally popular sports.
And now what?
Now, FIFA or whoever has to convince a small army of athletes, professional health freaks and their hangers-on, to travel and spend almost two months on a country so filled with smog, the daring act of spending a day outside is equal to smoking 2 or 3 packs of cigarettes. A country where they might get lynched by the population because they had the gall to eat some beef jerky after training, and the mere idea of having a drink of water is perpetually haunted by the ghost of diarrhea. And that's for the pampered multimillionaires with a large organization behind their backs.
The average tourist who just wants to see a ball kicked around for ~2h? They have to deal with that, and animals (dead and alive), garbage, stench, crime, scams, beggars, freaks, and all kinds of human waste if they want to sleep anywhere near a shot of penicilin. You're a woman and want to wear something cute in your country's colors? Better cough up the money for direct transport to the venues, because setting a foot outside the hotel will have you groped, fingered, ejaculated on, assaulted or raped by a swarm of unwashed human locusts. You might not even need to go that far; we had news, a while ago, of female tourists trapped in their hotel rooms as a gaggle of jeets stalked the corridor outside, awaiting in ambush for bob and vegana.
And, of course, there's the matter of their building and expanding infrastructure and services to deal with the sudden influx of people that demand, well, humane conditions. Police, administrative and judicial systems, logistics networks, energy grid, water distribution and sanitation (such as they are), food supply...
Doing anything there that involves a large amount of people or athletes is a self-fulfilling losing proposition. India's not hosting anything larger than the Cricket Cup any time soon.