This applies in general to all games. Even those who are popular initially. Remember what marketing was at the game Starcraft 2. Tens of millions of dollars were spent on advertising.
I even sometimes think that such games in the end do not bring profit but are image projects.
Thinking changes when you start to engage in large-scale projects. There people think in millions of dollars and big sums. To earn 25 million, they are ready to spend 20. In the end, it is profitable.