Oh come off it - it isn't theft just the same at isn't fraud. Your anger appears to be clouding your judgement.
It's a civil dispute that according to the terms you agreed to you may be on the wrong side of..
I would say there's a good analogy to be drawn to it. They've made a clear obligation and made a sales pitch to a lot of interested parties based on claims A, B, C and D (game modes). One month before the game goes live, claim A goes out of the window, leaving Claim B C and D fully intact, so whilst the majority of the game is there, a significant mode -has- been stripped, which causes a lot of people to get annoyed. When people who were invested on the basis of claim A want their money back, they're told they can't get it. That's at the least a massive failure of communication and incompetence of the highest order, and at worst highly shady.