But releasing an arcade cabinet is more expensive vs releasing digital content. People need to train in SFV and probably Capcom came to a conclusion that it is necessary evil to release it in this unfinished state. At least right now it can be use for tournament.
Personally I don't mind it, as long as Capcom will finish the game and provide it for free. It is better than releasing an "arcade" home version and releasing the super hyper extended street fighter V turbo edition which is a separate purchase.
The problem is that Capcom, I believe, didn't communicate about the whole reduced content for this early release.
Anyway, I don't think this is a money problem, but more of trying meeting the deadline to make the game available for tournaments. Of course with more money they might be able to acquire more people to help finishing this title early, but they should be able to finish it even without the money from early purchaser.