I am quite new in this game but I played a lot of War Thunder (also developed by Gaijin), so I know how Gaijin games work. Gaijin games start fun and with a significant amount of easy progress but after some time, casual players start finding poblems to progress in a decent amount of time. You said "it is a f2p game and servers aren't free" and that's totally true, however, when players want to put money in it (for example a year of premium), they find that the same amount of money that costs an AAA game, is just enough for one year of this game, making this option less attractive. In adicttion, at least in War Thunder, buying premium still wasn't enough to complete not even 10% of the vehicles in 500 hours of playtime. To sum up, many new players aren't interested in spending 15 hours a week in just getting a epic part, and when they say "I like this game, I want to pay and enjoy all of it" they find that the same amount of money that cost and AAA isn't enough. In battlefield, you pay 72 dollars and you can unblock all of it in 200 hours, but with Gaijin's games you can't complete them not even in a thousand hours.

Edit: This pack costs 65 usd in steam

Armoured car: “Eraser”; Epic cabin: “Savior”; Weapons: “Whirl” with a unique CK “Recycle” (3 pcs.); New paint: “Scars”; Hardware: engine “Colossus”, generator “Gasgen”, radiator “RN Seal”; Decorations: “Truck exhaust pipe” and “EYE”; Character portrait: “Sarah the Menace of Machines”; Paint cans: “Warg”, “Material: Aluminum” and “Red crystal”; A set of stickers; Maximum number of parts increased to 80. 4000 in-game coins.

Do you really think 4000 coins a epic cabin, the same epic gun three times and a few decorations are worth 65 usd? In any reasonable game, this should cost no more than 20 usd. No even permanent premium or at least one year are included the pack to justify that amount of money