That's a rules of the game. Every department want to grow its importance in the company, to get more power and resources. Well, sometimes this end up in failing

That's a rules of the game. Every department want to grow its importance in the company, to get more power and resources. Well, sometimes this end up in failing company, but they have no choice - if dep X decide to stop it, other won't - and the company fail anyway, but with dep Y on the top instead, all the difference is who will have more power during some time - then the choice is clear and no department will stop their play.