Its not always about money. Persistence, reach-back, burn concern, and being places we don't want pilots are significant factors in platform selection as well. I'm obviously talking about ISR (what the Combatant Commanders are screaming for), not CAS. I understand the benefits of keep it simple stupid, and that the wide range of mission sets and acronyms that have been developed for them is doctrinally confusing. Gen Welsh harped on this in 2012:
Trying to bring back the focus to core mission sets is great, especially from a PR standpoint and running with the narrative "only the Air Force can do what it does." However, keeping platforms in their own bubble of "designated" capabilities is not how we progress and the Predator wouldn't have a hellfire if we did. Mission sets blend as the kill chain shortens. Sure, the Bronco would be great and I'd rather fly it than be in a GCS, but it won't develop targets as well as the MQ-1/9. And if we want to finish those targets quickly, better to ensure the one that Finds/Fixes can also kill it. I think the Bronco would have a great roll in FID and COIN CAS, but ACC has decided it doesn't want a large stake in those mission sets and AFSOC has its own gray tail priorities. Plus, in AvFID, the country needs to buy their own planes to keep procurement fast and not have to deal with the foreign sales mess. That leaves CAS in a low threat, yet high CDE environment; for which ACC won't buy for exclusively or recognize is what "CAS" will be in the near future. In the name of simplicity the doctrine is holding us back, instead we really need some common sense.