I very seriously doubt there’s going to be a huge influx of new players. And I don’t even think there’s going to be a huge influx of returning players, especially not ones that are eager to pay $50 for more of the abysmal story mode.
Have you never looked at the sales/steam achievements for any fighting game? Multiplayer and vs is by far the minority of FG sales. Single player always does better.
48% of players have done half of story mode.
43% have 100% story mode.
36% have completed the basic tutorial
16% have played 5+ kombat league sets.
And bluntly, yes the company who's been making top selling fighting games for several years now is likely correct in their market assessment that people will pay $50 for more singleplayer content.
They do a LOT of shit that annoys me, but I respect that some of it is because it fucking works, and you don't get hyper sized budgets pumping out failures.