I mean, I've seen like no reason to touch any of the microtransactions in this game so far. I'd imagine the vast majority of players won't ever spend a dime on them.
I feel like this game is only F2P because Capcom is nearly out of money, to the point where their Panta Rhei engine hasn't seen the light of day and their other planned F2P game, Deep Down, was evidently too ambitious/costly and is now likely vaporware. Maybe if they were satisfied making a solid $40-60 per user, they'd still be able to put out AAA games without the support of other publishers.
Capcom is simultaneously one of the best developers and one of the worst publishers in the entire industry. Their endless supplies of talent and creativity have been totally poisoned by their business practices.