Because The Federation isn’t a military industrial complex, and the Klingons still had the tactical advantage with their cloak.What never makes sense to me is how could Starfleet ever loose a war to just about anyone. They literally got hundreds of worlds to drawl resources and people from and that doesn't even include colonies and non-alligned allies. How could one world ever stand up against that? At least with the Dominion it was kind of like the evil version of the federation which also had many worlds under it's control and I guess creating Jem'Haddar and Vorta must be like no big deal at all since they just hatch them from cloning facuilities.
Jason
The Federation probably couldn’t switch to a war footing fast enough.