It should be radically different. There are far too many aircraft flying at this point. JFK, LHR, and many other airports are statistically saturated. Any weather or other event causes massive delays. There is no slack in the system at these places to absorb the investable events. The same applies to the airlines. They do not have as many spare aircraft/personnel to cover for uncertainties, most likely because this increases costs. And the flying public does not want to pay more to fly to cover those costs when some startup airline will fly cheap until they burn through their initial cash pile and the realities of the industry catch up to them. Rinse. Repeat.

Ultimately, the solutions lie in facing the reality of aviation. It is tremendously expensive to own and operate aircraft and airports. The public must be made to see this. If you want to travel between New York and London at a speed of 500+ miles per hour, safely, in a clean, well-staffed aircraft, arrive on-time at a similarly equipped and operated airport, then you must pay what it costs. And the cost must be paid by the traveler in every way. Not subsidized by gov't, the engine mfg, the aircraft mfg, or anyone else. You want to fly? You have to pay.