Some interesting facts about Nestle India -

55% profit from infant milk powder (1.5 bn $ per annum industry in India alone, Nestle market share is 97%)
30% profit from Maggi
4/5th of Free cash flow from Infant milk powder alone

So why don’t other companies compete with nestle for such big profits? Due to classification of infant milk powder as a prescription drug, no new licenses in past 15 years, and no advertising. Also, it can be only sold at pharmacists, not in stores/Kirana.

When Maggi was banned (MSG issues), the instant noodles market in India actually shrunk! That talks volumes about the product and its brand recall. (Do note that people call noodles as Maggi like they call detergent as Nirma, adhesives as fevicol, etc) https://economictimes.indiatimes.com/industry/cons-products/food/maggi-ban-impact-nestle-india-may-take-3-years-to-recover/articleshow/51114562.cms?from=mdr