Simple is beautiful
In real conflicts (not talking about colonization of resource-rich poorly armed countries here), what dou you want? Loads of cheap, robust aircrafts easily expandable and quickly built, or expensive, complicated, failure-prone and unmaintainable shiny pieces of kit? Plus, it doesn't take an expensive shiny state-of-the-art jet to take down these "mine is bigger than yours" thinggies. Only a skilled pilot in a relatively obsolete aircraft. Now throw in the required pilot training and ground support... I bet a picture is beginning to form.
Same for the current "multi-purpose" hype. When you can -quickly- get a dozen of good and robust specialized aircrafts for the price of a single shiny complicated -and late- multi-purpose one, why would you go for the latter?
Look at what happened in wwII. Do you think Germany and Japan would have been able to expand like that in a very short amount of time if they hadn't used robust, cheap, easy to build (and quite crappy) aircrafts? True, they finally lost, but it took a considerable amount of time and "casualties", and they were fighting against the odds anyway (ressource-wise). And that's not specific to aviation. On the ground, the IIIrd Reich was basically defeated by the USSR and their pre-historic armoured vehicles, backed by horse-driven support (sorry Yanks, but when you went in all the real German forces were East, trying to keep the Ruskies away from Berlin. History can't be totally obliterated by Holliwood movies).
Now I understand that we are not preparing a world war, but trying to gain control by "surgical" interventions. But wouldn't a good long-range aircraft with a large payload be more useful than a neutered shiny jet that might at some point be able to take off or land vertically (provided you cut the fuel and fire power out), from a slow carrier that will need days if not weeks to reach the region of interest?
Some people clearly have wayyyy to much money in their hands, and the bad thing is, this money comes from our pockets (and is taken away from education, public health and the like). Not to mention that this money might also be used to teach American pilots how to tell the difference between the Union Jack and a dart board...