I agree, but I see it more of a elitist thing. Like we made this fighting game for the RealFTGPeople(tm) who play fighting games. We're not going to put an arcade mode in for those lame single player plebs. Arcade modes suck, what's the point when you could be fighting another human like RealFTGPeople(tm) do. Don't tarnish our true competitive fighting game with an arcade mode.
That's kind of how the SF team people come off to me in this whole V fiasco. As you said, it'd take them like a week max it implement a standard arcade mode, but they don't.