The V-force norm in the 60s and 70s was 300 hours per year. Compared with a modern civilian pilot that was not much. The difference is that the military pilot flew only sufficient to maintain a capability, in this case a combat proficiency should he need to go to war.
The civilian pilot must fly as much as he can to earn revenue for his company. Too many pilots flying too few hours is an unnecessary overhead.
I averaged over my flying life some 180 hours per year. During a Cod War my annualised average was neared 700 and during the end of the Cold War it was over 500 per year.