The impact of the 1978 Airline Deregulation Act was a "double-edged sword" for airlines. In the short term, it allowed for massive growth; airlines were finally free to set their own fares and choose their own routes without government approval. This led to the birth of the "Hub and Spoke" system, which increased efficiency. However, it also sparked fierce competition and "fare wars" that destroyed many legendary carriers like Pan Am, TWA, and Eastern Air Lines, who couldn't adapt to the low-cost environment. While passengers benefited from significantly lower fares and more choices, many airlines suffered from chronic instability and frequent bankruptcies. In 2026, the legacy of deregulation is a highly consolidated industry dominated by a few "mega-carriers." While the survivors have become more profitable and efficient through "unbundling" (charging for bags, seats, etc.), the era of "luxury" air travel for all was effectively ended by the cutthroat economics introduced by the 1978 Act.