I haven't seen the program yet. So some of this may be redundant. Hopefully my neighbor will record it on the repeat.
I believe that the key to the end of the hub and spoke system is the single pilot jet, (okay two keys) and more efficient, simpler jet engines. Lears and Citations are never going to be viable competition for the 737 and 757 sized transports, as long as it takes two people to operate them, and $10 million to buy them.
I believe the Eclipse Jet, if it succeeds, is the first baby step in this direction. It could end up being the answer for most trips between 200 and 1,000 miles. Eclipse has going for it, the fact that it started as an idea for an engine looking for an application. That's the way the microcomputer revolution started thirty odd years ago. Eclispe isn't the only player, either. the safire jet is also in the works.