US general aviation airports to take on a commercial role?

With the majority of US airlines that have so far reported their 2Q1020 financial results showing a surprisingly healthy profit and/or revenue increase and with economic data generally suggesting that the country may be about to turn the corner as we 'celebrate' the three year anniversary of the deepest, and what will shortly be the longest, recession since WWII, the US's lack of airport capacity in some regions once again rears its head. The last significant primary airport development was Denver International, which opened 15 years ago. Although there have been a handful of new secondary airports appearing during the last two years such as Branson, Missouri and Northwest Florida, there is a growing suggestion that general aviation airports in some of the US's principal municipal city-regions might be needed to fill the gap.