Certainly wasn't the case for the V-boat build programme - part of the reason that we went from 50+ to 44 DD/FF IIRC and the extended life (decrepitude?) of Feraless & Intrepid. Elements of the supporting infrastructure might be purple, but AIUI the boats come straight out of Fleet & DGSM budgets.
While I'm at it, just having SOSS and RORSATs doesn't solve all your problems. Are they geostationary? Predictable orbits?