If the war breaks out, CONCORD will disintegrate. It has already been breached once, when a nation decided military action was needed and capital ships went into the fire. More importantly, you think a real war would be limited to highsec? The nations extend far beyond the kiddie pool.
Effective use of Micro Jump Field Generators, Burst Projectors, Capital vessels, Black Ops/Recon/CovOps, large scale fleets even without any of the above, logistics operations and coordination, large scale deployment, infrastructure management and coordination, the adept use of wormhole mapping, routes and logistics, combined arms fleets, and more are all things you pretty much never see in highsec. These are also all things that would be part of an all out war.
Innovation and the cutting edge of strategy and tactics have never been the forte of highsec. Capsuleers waging war will almost certainly be a significant force to be reckoned with once hostilities become formal, and do you think you and yours could stand up to for instance CVA, who have had over a decade learning how to effectively fight other capsuleers?
You think capital ships are the only meaningful difference between the kiddie pool and the vastness of New Eden? You have seen nothing. Spirits below, may they protect you from ever having to see a war being waged. It’s quite clearly beyond what your limited imagination can handle.
Without the experienced large scale fleet commanders of null, the courageous and dangerous explorers of wormhole space and the skilled prowlers and hunters of lowsec, I can assure you any war would be lost against those who do have them.