everything has gotten so expensive that upgrading anything is straight up impossible for normal players. I get that f2p players aren't directly beneficial to your bank accounts, but they are essential to a game's player base.
like how many new players would want to play a game where getting a max op takes 3-4 YEARS? and even if you decide to spend hundreds of dollars, you merely get a lower chance of completely getting wreaked by money whales who themselves only play because they've invested so much.
The game's economy should be set up so that it takes NO longer than 1 year to max a set of 3 ops, with 3 weapons, and at least 1-2 special or secondary weapons.
the goal?
to make sure new players feel PROGESSION
why?
because if players feel like they've gotten nowhere after months of playing, they're gonna get bored, and playing will feel like a chore, combine that with horrible matchmaking, strings of bad updates, and you'll lose most of your player base, which is the current state of the game.