I wouldn’t use Battlefield as a positive comparison. That franchise has been slowly dying for years now. Regardless, that hasn’t been the sentiment I’ve heard, but maybe I’m wrong, though I’m skeptical.
Those would be good points if it weren’t for the fact War Thunder currently has Naval, Ground, and Aircraft all in one game. They follow this logic, at the very least naval would have been spun off into its own game from the outset.
As for the rating, that really isn’t as big of an issue everyone makes it out to be. There are ways to keep a low age rating if they care about it, like not having blood and so on. At worst, it would be rated T, which is what Fortnite is.
And they could arguably make more money if they merged Enlisted into War Thunder. War Thunder is an established title, and much of its success can be attributed to it being, in effect, 3 games merged into one. Adding a fourth, one that has more appeal then Naval, would expand the game’s market and increase the playerbase of both.
And, again, War Thunder, the far more popular title, is nipping at the heels of what can be added, at least for its most popular modes (Ground and Air). ‘Sacrificing’ Enlisted to expand the longevity of War Thunder by merging it under War Thunder’s umbrella is a mutually beneficial decision. Enlisted would gain access to a much wider array of vehicles, Enlisted expands its playerbase, more attention would be brought on to War Thunder and it can advertise to the FPS crowd.
I’d also hardly say that War Thunder is better off without playable infantry, provided it is in its own game mode. So long as Ground battles, as we know them, stay the same (maybe rename them ‘tank battles’ or something), nothing is lost and is only gained.
EDIT:
Don’t see why that would be. War Thunder regularly gets tens of thousands of players as it stands, and there are streamers aplenty already. I fail to see how the existence of an infantry game mode would suddenly make people quit, so long as they can still play ground as it is now.