[Mustang]

In the old Steel Panthers, the ammount of air sorties each side got was determined by an "air superiority" calculation. Certain countries, like Israel, had high air superiority ratings, and so almost always owned the skies versus low-air-superiority countries like Iraq and the Middle East armies. The side that owns the sky gets ALL air sorties; the other side gets nothing; there is no situation where one side gets aircraft and the other side gets aircraft too.

I don't know if WinSPMBT does this also, but it seems to make more sense than allowing both sides to have aircraft in the same battle. If it bothers you, then don't set the AI air sorties at "XXX". Set them to any other number, and they will have that number of aircraft in each game.

So the reason the AI isn't buying aircraft is because it can't- Israel is trumping them in terms of air superiority. If you play as an arab country versus israel instead, then you probably won't get any sorties and the enemy will.