yes something like that.. in example you have 5 air fleets but a strategic attack on your air fleet factory made some damage...
and you wan't to buy a new fllet it should cost you more depending on damage normal price is 400 but now it costs you 425, 450 depending on the amount of damage or even you are not allowed to buy an additional air fleet and as a bonus those fleets that you already have cost more to reinforce or are not allowed to reinforce..
so strategic bombing is making it count !