WW2 and early cold war vehicles won’t bring the money nor the hype that these leaked vehicles will bring.
War thunders entire update model for the past 8 years have been releasing new dangling vehicles to keep people playing.
People playing costs the company money.
The “update model” [not a thing] exists to support game development in a consistent manner.
Features, vehicles, etc.
Vehicles are not the goal of War Thunder. And infinite profit also isn’t the goal of War Thunder.