I’m not sure that is true, though you do hear people say it from time to time.
I believe that the ratio of hub and spoke routes vs point to point routes will dynamically shift in response to demand and to external factors like laws, fuel prices, aircraft efficiency, etc.
The hub and spoke model is usually the more compelling economic model to serve many low demand cities by pooling passengers as well as for routing flexibility. Hub and spoke will never truly be replaced.
Whereas point to point is more efficient for high demand city pairs. Modern composite material ( fuel efficient ) aircraft also make it feasible to fly segments with lower load factors, up to a point, so you don’t need to fill up a plane to make a route viable, making it possible to bypass hubs. Even then you would never fly point to point from say Des Moines to Asheville NC. You might fly to a non hub airport like RDU, but if enough flights end up at RDU it becomes a de facto regional hub like CLT.
Depending on the demand patterns of flight routes, airlines can reconfigure routes to fly to hubs or point to point or a mix of both, whichever maximizes profit, so it’s not an either-or.
Hubs are all very big cities. very big cities are growing faster than small ones in general. Big cities not quite big /lucky enough to be a hub are getting point to point routes that are farther away than just hubs. Small cities still have flights only to hubs.
Of course this depends on the destination. Even tiny airports often have point to point trips to Las Vegas on dirt cheap airlines because that is a popular destination.
I believe that the ratio of hub and spoke routes vs point to point routes will dynamically shift in response to demand and to external factors like laws, fuel prices, aircraft efficiency, etc.
The hub and spoke model is usually the more compelling economic model to serve many low demand cities by pooling passengers as well as for routing flexibility. Hub and spoke will never truly be replaced.
Whereas point to point is more efficient for high demand city pairs. Modern composite material ( fuel efficient ) aircraft also make it feasible to fly segments with lower load factors, up to a point, so you don’t need to fill up a plane to make a route viable, making it possible to bypass hubs. Even then you would never fly point to point from say Des Moines to Asheville NC. You might fly to a non hub airport like RDU, but if enough flights end up at RDU it becomes a de facto regional hub like CLT.
Depending on the demand patterns of flight routes, airlines can reconfigure routes to fly to hubs or point to point or a mix of both, whichever maximizes profit, so it’s not an either-or.