The document discusses the low-cost carrier industry in India. It notes that low-cost carriers like Ryanair and Southwest Airlines have been very profitable compared to established carriers. In India, the key low-cost carriers are Air Deccan, SpiceJet, IndiGo, and Go Air, which have been successful by adopting business models focused on reducing costs and offering lower fares. The market share of low-cost carriers in India has been growing and consolidation is occurring, such as Kingfisher acquiring a stake in Air Deccan. The future of the Indian aviation industry is projected to see significant passenger growth over the next decade.