There's zero story to base this around, just a bare glaze to justify a bunch of people getting together to fight each other for the very few that care. I'm against making videogame movies in general, but even considering that, Street Fighter seems like an especially poor choice. The other SF movie at least tried to play to SF strengths by embracing their colorful characters rather than greying them, but that turned into an abortion now, didn't it?
So I say again, why?