Local transport isn't any more of an issue than it is with air travel. If there's not sufficient public transportation, taxis and car rental companies will pop up to fill the void.
Even if it were an issue, people in this country are getting increasingly fed up with air travel, and they may be willing to make some trade-offs to travel in a more humane manner.
If you consider high speed rail as a replacement for air travel, local transport is actually a smaller issue than with air travel. Airports are usually far away from city centers, whereas train stations are located in city centers, where there is a higher probability of an established local transport system.
Even if it were an issue, people in this country are getting increasingly fed up with air travel, and they may be willing to make some trade-offs to travel in a more humane manner.