> How does a game studio should earn money then?
I'll echo others: Charge money. Don't hide the actual cost behind a bevy of different and confusing currencies. Ads are attention vampires, and are not consumer friendly despite their innocuous appearances.
I'd also posit that in-game ads will not be sustainable long term. There's already a huge backlash against ads on web pages, I think that games are going to be close behind. Sites like this are only the start of that trend.
> How a game studio can make money with a F2P game?
Ask Epic games how they made money. Or don't ask, they've talked about it extensively. I'm not fond of the side effect of peer pressure against kids to get money, but the model is otherwise fairly sound.
> why a F2P with IAP and ads is not always a Bullshit game
Ads are bullshit. Gambling mechanics hidden as IAP are bullshit. Allowing individuals to spend hundreds and thousands of dollars on a mobile game is bullshit. Avoid those, and you will avoid a lot of the worst blowback.