old wepon systems are faster to replace if new weapon systems are autonomous because less training and personel is needed

I think recent conflicts and wars show that countries with older weapon systems would be able to switch to new weapon systems faster if those new weapon systems were autonomous, 

because fewer personel need to be trained or reeducated 

and fewer personel are needed, 

one drone operator could fly many drones, 

instead of one pilot per aircraft, 

same priciple applies to future drone combat vehicles, 

future drone missile launcher vehicles, 

future drone artillery vehicles 

and drone ships