cheaper aircraft needs cheaper airports

when aircraft become cheaper to build and to fly, 

then airports have to become cheaper, 

the only way to make airports cheaper is to remove runways

and use vtol aircraft instead 

if vtol aircraft is international passenger flight, 

then vtol aircraft lands in area, 

and vehicle drives to area, 

vehicle functions as mobine terminal, 

passengers exit vtol aircraft directly into vehicle,

security and passport checks are automatically handled onboard vehicle, 

passengers exit vehicle, 

or vehicle drive passengers somewhere

automated flight will probably be used for landing vtol aircraft 

industry automation will make it cheaper to build aircraft, 

automated flight will make it cheaper to fly aircraft 

no buildings needed,  

mobile terminal vehicles, 

mobile repair vehicles, 

fuel in vehicle trailers, 

or batteries in vehicle trailers, 

or stuff in placed containers,

if energy infrastructure already available, 

then that is used, 

electric grid or solar farm 

and so on