I once tried to halt a bad enterprise sales purchase before it had been signed... But some people (who didn't understand the use of the software) had already a

I once tried to halt a bad enterprise sales purchase before it had been signed... But some people (who didn't understand the use of the software) had already already invested some face in the purchase. Maybe also a bit of "nobody ever got fired for buying ___", and the enterprise sales rep seemed very reassuring. :)